<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2025 Workiva-->
<!--r:755ead77-83ac-4be3-8dae-f88e9eadbec4,g:643ac9b3-beb2-4080-be7e-2fe99b2009ff-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://silvaco.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFLOSSINCOME" xlink:type="simple" xlink:href="svco-20250331.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFLOSSINCOME"/>
  <link:definitionLink xlink:role="http://silvaco.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFLOSSINCOME" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_c7901a24-457a-48a1-aa22-7ff71e594385" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_0beea4f2-fe8a-4c88-9e28-46b7fd4bb17e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_c7901a24-457a-48a1-aa22-7ff71e594385" xlink:to="loc_us-gaap_StatementTable_0beea4f2-fe8a-4c88-9e28-46b7fd4bb17e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_490fa8a2-fde5-4c5f-8061-be2bfd8e9580" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_0beea4f2-fe8a-4c88-9e28-46b7fd4bb17e" xlink:to="loc_srt_ProductOrServiceAxis_490fa8a2-fde5-4c5f-8061-be2bfd8e9580" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_490fa8a2-fde5-4c5f-8061-be2bfd8e9580_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_490fa8a2-fde5-4c5f-8061-be2bfd8e9580" xlink:to="loc_srt_ProductsAndServicesDomain_490fa8a2-fde5-4c5f-8061-be2bfd8e9580_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_64faf551-d11e-48cc-9f14-430965e23153" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_490fa8a2-fde5-4c5f-8061-be2bfd8e9580" xlink:to="loc_srt_ProductsAndServicesDomain_64faf551-d11e-48cc-9f14-430965e23153" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LicenseMember_b3bd8e32-cdbe-4eca-be05-54ade8a663b1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LicenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_64faf551-d11e-48cc-9f14-430965e23153" xlink:to="loc_us-gaap_LicenseMember_b3bd8e32-cdbe-4eca-be05-54ade8a663b1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_SoftwareMaintenanceAndServiceMember_2e3c4232-4a2c-4949-a7af-49b5fa173f64" xlink:href="svco-20250331.xsd#svco_SoftwareMaintenanceAndServiceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_64faf551-d11e-48cc-9f14-430965e23153" xlink:to="loc_svco_SoftwareMaintenanceAndServiceMember_2e3c4232-4a2c-4949-a7af-49b5fa173f64" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfitAbstract_e759b1ca-7e56-455b-a1af-1f992c6e894a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GrossProfitAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c7901a24-457a-48a1-aa22-7ff71e594385" xlink:to="loc_us-gaap_GrossProfitAbstract_e759b1ca-7e56-455b-a1af-1f992c6e894a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_f99a8297-282a-414d-a710-eaa5f636da4c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GrossProfitAbstract_e759b1ca-7e56-455b-a1af-1f992c6e894a" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_f99a8297-282a-414d-a710-eaa5f636da4c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_b70cf936-c8b1-427d-ab5e-7e1bb3074d1c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GrossProfitAbstract_e759b1ca-7e56-455b-a1af-1f992c6e894a" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_b70cf936-c8b1-427d-ab5e-7e1bb3074d1c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_62115f48-3352-4cb1-907c-bb7300df7c38" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GrossProfit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GrossProfitAbstract_e759b1ca-7e56-455b-a1af-1f992c6e894a" xlink:to="loc_us-gaap_GrossProfit_62115f48-3352-4cb1-907c-bb7300df7c38" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpensesAbstract_ae098846-6bb1-4186-bffb-d4b2d3b32e12" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CostsAndExpensesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c7901a24-457a-48a1-aa22-7ff71e594385" xlink:to="loc_us-gaap_CostsAndExpensesAbstract_ae098846-6bb1-4186-bffb-d4b2d3b32e12" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_81a0588d-8199-4045-808c-03448279a48c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ResearchAndDevelopmentExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_ae098846-6bb1-4186-bffb-d4b2d3b32e12" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpense_81a0588d-8199-4045-808c-03448279a48c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingAndMarketingExpense_02dbf217-7e3a-499b-94d7-ba87d7595cbf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SellingAndMarketingExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_ae098846-6bb1-4186-bffb-d4b2d3b32e12" xlink:to="loc_us-gaap_SellingAndMarketingExpense_02dbf217-7e3a-499b-94d7-ba87d7595cbf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_ddcce3c7-a5eb-432c-aafd-e18a350ca71a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_ae098846-6bb1-4186-bffb-d4b2d3b32e12" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpense_ddcce3c7-a5eb-432c-aafd-e18a350ca71a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyAccrualProvision_b4160550-0f1f-41dc-a59b-ad78001e2cfc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LossContingencyAccrualProvision"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_ae098846-6bb1-4186-bffb-d4b2d3b32e12" xlink:to="loc_us-gaap_LossContingencyAccrualProvision_b4160550-0f1f-41dc-a59b-ad78001e2cfc" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_4a53b6e1-3c0a-4887-9047-54227c4f4059" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_ae098846-6bb1-4186-bffb-d4b2d3b32e12" xlink:to="loc_us-gaap_OperatingExpenses_4a53b6e1-3c0a-4887-9047-54227c4f4059" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_085858d7-7dc0-40da-b2a7-08958c3a88db" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c7901a24-457a-48a1-aa22-7ff71e594385" xlink:to="loc_us-gaap_OperatingIncomeLoss_085858d7-7dc0-40da-b2a7-08958c3a88db" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeInterest_752d0acb-4b40-4257-9d82-32cbfa61b4cd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InvestmentIncomeInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c7901a24-457a-48a1-aa22-7ff71e594385" xlink:to="loc_us-gaap_InvestmentIncomeInterest_752d0acb-4b40-4257-9d82-32cbfa61b4cd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseNonoperating_53d7fba4-db7c-455d-a729-ef7b6a7b17a5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestExpenseNonoperating"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c7901a24-457a-48a1-aa22-7ff71e594385" xlink:to="loc_us-gaap_InterestExpenseNonoperating_53d7fba4-db7c-455d-a729-ef7b6a7b17a5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_1fec3cdf-1e4e-4c75-83c6-6caa6ef7d626" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c7901a24-457a-48a1-aa22-7ff71e594385" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_1fec3cdf-1e4e-4c75-83c6-6caa6ef7d626" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_58a80a6f-55ba-4fae-869b-d3d84b2e92bb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c7901a24-457a-48a1-aa22-7ff71e594385" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_58a80a6f-55ba-4fae-869b-d3d84b2e92bb" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_3ca73a69-c807-4b78-bc15-914d59f22d3a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c7901a24-457a-48a1-aa22-7ff71e594385" xlink:to="loc_us-gaap_NetIncomeLoss_3ca73a69-c807-4b78-bc15-914d59f22d3a" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareAbstract_1b4bb1b6-bd92-495a-9481-6d72d4a48a41" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EarningsPerShareAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c7901a24-457a-48a1-aa22-7ff71e594385" xlink:to="loc_us-gaap_EarningsPerShareAbstract_1b4bb1b6-bd92-495a-9481-6d72d4a48a41" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_7978fa8e-62e6-4c62-8a4a-ff49839b92db" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareAbstract_1b4bb1b6-bd92-495a-9481-6d72d4a48a41" xlink:to="loc_us-gaap_EarningsPerShareBasic_7978fa8e-62e6-4c62-8a4a-ff49839b92db" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_fe2da1a9-2a27-4025-bec4-5e616d6e7e85" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareAbstract_1b4bb1b6-bd92-495a-9481-6d72d4a48a41" xlink:to="loc_us-gaap_EarningsPerShareDiluted_fe2da1a9-2a27-4025-bec4-5e616d6e7e85" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_728bcda5-14e9-47ee-ae93-04cdd19461de" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c7901a24-457a-48a1-aa22-7ff71e594385" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_728bcda5-14e9-47ee-ae93-04cdd19461de" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_ad74ef47-13f4-42ed-a882-ce886ed9e6e8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_728bcda5-14e9-47ee-ae93-04cdd19461de" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_ad74ef47-13f4-42ed-a882-ce886ed9e6e8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_a3d6ed95-b7aa-459a-ad76-7717daae37d2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_728bcda5-14e9-47ee-ae93-04cdd19461de" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_a3d6ed95-b7aa-459a-ad76-7717daae37d2" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://silvaco.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY" xlink:type="simple" xlink:href="svco-20250331.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY"/>
  <link:definitionLink xlink:role="http://silvaco.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_b3dd4757-ee7e-4e2f-8bad-a7193cf1c5bd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_7d66cd96-8ad4-4921-8961-ea51589ea0fd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_b3dd4757-ee7e-4e2f-8bad-a7193cf1c5bd" xlink:to="loc_us-gaap_StatementTable_7d66cd96-8ad4-4921-8961-ea51589ea0fd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_c8609db6-98b1-45d5-a634-282d4a0f4b88" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_7d66cd96-8ad4-4921-8961-ea51589ea0fd" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_c8609db6-98b1-45d5-a634-282d4a0f4b88" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_c8609db6-98b1-45d5-a634-282d4a0f4b88_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_c8609db6-98b1-45d5-a634-282d4a0f4b88" xlink:to="loc_us-gaap_EquityComponentDomain_c8609db6-98b1-45d5-a634-282d4a0f4b88_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_7f9527b3-1f16-436f-99e6-c08aa134205c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_c8609db6-98b1-45d5-a634-282d4a0f4b88" xlink:to="loc_us-gaap_EquityComponentDomain_7f9527b3-1f16-436f-99e6-c08aa134205c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_0ad7bffd-c652-43e5-bfc1-5722dd9cf06f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_7f9527b3-1f16-436f-99e6-c08aa134205c" xlink:to="loc_us-gaap_CommonStockMember_0ad7bffd-c652-43e5-bfc1-5722dd9cf06f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_0c90e2af-e878-4c15-8732-8f72ab73139f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_7f9527b3-1f16-436f-99e6-c08aa134205c" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_0c90e2af-e878-4c15-8732-8f72ab73139f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_cd476987-6fba-4720-8995-d7caa3c1dae5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_7f9527b3-1f16-436f-99e6-c08aa134205c" xlink:to="loc_us-gaap_RetainedEarningsMember_cd476987-6fba-4720-8995-d7caa3c1dae5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_68f2ddbe-3b53-4985-9e28-dcbec807a734" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_7f9527b3-1f16-436f-99e6-c08aa134205c" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_68f2ddbe-3b53-4985-9e28-dcbec807a734" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_6b961671-8f8f-4ecb-b1c2-99889a708d47" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_b3dd4757-ee7e-4e2f-8bad-a7193cf1c5bd" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_6b961671-8f8f-4ecb-b1c2-99889a708d47" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_aee28b1d-b518-4849-af5e-3cc793d0f768" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_6b961671-8f8f-4ecb-b1c2-99889a708d47" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_aee28b1d-b518-4849-af5e-3cc793d0f768" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_d30df983-aec1-4f60-aae0-1d79605b9823" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_6b961671-8f8f-4ecb-b1c2-99889a708d47" xlink:to="loc_us-gaap_StockholdersEquity_d30df983-aec1-4f60-aae0-1d79605b9823" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_de92ed1b-23ce-45e8-b66b-291bc78da085" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_6b961671-8f8f-4ecb-b1c2-99889a708d47" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_de92ed1b-23ce-45e8-b66b-291bc78da085" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_164bdd68-11e3-4a51-b769-b2e78f1d1f04" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_6b961671-8f8f-4ecb-b1c2-99889a708d47" xlink:to="loc_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_164bdd68-11e3-4a51-b769-b2e78f1d1f04" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_401c77ff-17ff-4224-bb26-be0fd6ce02dd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_6b961671-8f8f-4ecb-b1c2-99889a708d47" xlink:to="loc_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_401c77ff-17ff-4224-bb26-be0fd6ce02dd" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_d5d0b1e1-b682-45df-9a63-bef8585d5c50" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_6b961671-8f8f-4ecb-b1c2-99889a708d47" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_d5d0b1e1-b682-45df-9a63-bef8585d5c50" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_1681da2c-89f4-4992-af80-90ff258fccc9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_6b961671-8f8f-4ecb-b1c2-99889a708d47" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_1681da2c-89f4-4992-af80-90ff258fccc9" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_d2da49fd-c6d3-40f8-92d5-fea016b514ba" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_6b961671-8f8f-4ecb-b1c2-99889a708d47" xlink:to="loc_us-gaap_NetIncomeLoss_d2da49fd-c6d3-40f8-92d5-fea016b514ba" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_170d35f3-8545-4130-8885-215f9569dd82" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_4b156605-1c87-4dca-8b95-a4835f0fc3d2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquity"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://silvaco.com/role/SummaryofSignificantAccountingandReportingPoliciesSchedulesofConcentrationofRiskbyRiskFactorDetails" xlink:type="simple" xlink:href="svco-20250331.xsd#SummaryofSignificantAccountingandReportingPoliciesSchedulesofConcentrationofRiskbyRiskFactorDetails"/>
  <link:definitionLink xlink:role="http://silvaco.com/role/SummaryofSignificantAccountingandReportingPoliciesSchedulesofConcentrationofRiskbyRiskFactorDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_svco_AccountingPoliciesLineItems_514ad124-4aea-4728-b44b-509944250a4f" xlink:href="svco-20250331.xsd#svco_AccountingPoliciesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_AccountingPoliciesTable_0350dca5-e59f-4422-b12c-970872397f4e" xlink:href="svco-20250331.xsd#svco_AccountingPoliciesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_svco_AccountingPoliciesLineItems_514ad124-4aea-4728-b44b-509944250a4f" xlink:to="loc_svco_AccountingPoliciesTable_0350dca5-e59f-4422-b12c-970872397f4e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MajorCustomersAxis_db4e4744-428e-4ce6-902c-35084c925c9e" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MajorCustomersAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_svco_AccountingPoliciesTable_0350dca5-e59f-4422-b12c-970872397f4e" xlink:to="loc_srt_MajorCustomersAxis_db4e4744-428e-4ce6-902c-35084c925c9e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_db4e4744-428e-4ce6-902c-35084c925c9e_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_MajorCustomersAxis_db4e4744-428e-4ce6-902c-35084c925c9e" xlink:to="loc_srt_NameOfMajorCustomerDomain_db4e4744-428e-4ce6-902c-35084c925c9e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_a7abdedd-608b-46d7-94d0-1871b8fc18a3" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_MajorCustomersAxis_db4e4744-428e-4ce6-902c-35084c925c9e" xlink:to="loc_srt_NameOfMajorCustomerDomain_a7abdedd-608b-46d7-94d0-1871b8fc18a3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_CustomerAMember_72e15770-de41-4f7d-acd7-800cb22dcb25" xlink:href="svco-20250331.xsd#svco_CustomerAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_a7abdedd-608b-46d7-94d0-1871b8fc18a3" xlink:to="loc_svco_CustomerAMember_72e15770-de41-4f7d-acd7-800cb22dcb25" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_CustomerBMember_eb524f45-bb1b-4f79-935a-f67be7c71dd1" xlink:href="svco-20250331.xsd#svco_CustomerBMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_a7abdedd-608b-46d7-94d0-1871b8fc18a3" xlink:to="loc_svco_CustomerBMember_eb524f45-bb1b-4f79-935a-f67be7c71dd1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_CustomerCMember_d04d8e31-ba72-4903-bf88-accd70e9ee19" xlink:href="svco-20250331.xsd#svco_CustomerCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_a7abdedd-608b-46d7-94d0-1871b8fc18a3" xlink:to="loc_svco_CustomerCMember_d04d8e31-ba72-4903-bf88-accd70e9ee19" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_CustomerDMember_c5d98b24-6a1a-4927-a671-2b45f4e54420" xlink:href="svco-20250331.xsd#svco_CustomerDMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_a7abdedd-608b-46d7-94d0-1871b8fc18a3" xlink:to="loc_svco_CustomerDMember_c5d98b24-6a1a-4927-a671-2b45f4e54420" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_CustomerEMember_b13cd643-101f-47b1-b6a8-969090a2a739" xlink:href="svco-20250331.xsd#svco_CustomerEMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_a7abdedd-608b-46d7-94d0-1871b8fc18a3" xlink:to="loc_svco_CustomerEMember_b13cd643-101f-47b1-b6a8-969090a2a739" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_CustomerFMember_e1c3b0d0-946b-416b-a9d1-e2efb9378fe3" xlink:href="svco-20250331.xsd#svco_CustomerFMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_a7abdedd-608b-46d7-94d0-1871b8fc18a3" xlink:to="loc_svco_CustomerFMember_e1c3b0d0-946b-416b-a9d1-e2efb9378fe3" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_CustomerGMember_0d861065-8b77-4ab5-a5be-07d1da76cdfc" xlink:href="svco-20250331.xsd#svco_CustomerGMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_a7abdedd-608b-46d7-94d0-1871b8fc18a3" xlink:to="loc_svco_CustomerGMember_0d861065-8b77-4ab5-a5be-07d1da76cdfc" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_93f3d0ce-1af2-4b73-9e0c-644a50e0b547" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_svco_AccountingPoliciesTable_0350dca5-e59f-4422-b12c-970872397f4e" xlink:to="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_93f3d0ce-1af2-4b73-9e0c-644a50e0b547" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_93f3d0ce-1af2-4b73-9e0c-644a50e0b547_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_93f3d0ce-1af2-4b73-9e0c-644a50e0b547" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_93f3d0ce-1af2-4b73-9e0c-644a50e0b547_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_e14998e3-56e4-4e2c-97ce-2d36d47cce70" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_93f3d0ce-1af2-4b73-9e0c-644a50e0b547" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_e14998e3-56e4-4e2c-97ce-2d36d47cce70" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableMember_6236325b-7a6e-4037-a7ae-91e33d45b75d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccountsReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_e14998e3-56e4-4e2c-97ce-2d36d47cce70" xlink:to="loc_us-gaap_AccountsReceivableMember_6236325b-7a6e-4037-a7ae-91e33d45b75d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesRevenueNetMember_ecd6fdd1-27c8-4809-9b7d-0d2227f47b61" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SalesRevenueNetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_e14998e3-56e4-4e2c-97ce-2d36d47cce70" xlink:to="loc_us-gaap_SalesRevenueNetMember_ecd6fdd1-27c8-4809-9b7d-0d2227f47b61" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_9a3c844b-efd1-4a37-b78c-38da75d38886" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_svco_AccountingPoliciesTable_0350dca5-e59f-4422-b12c-970872397f4e" xlink:to="loc_us-gaap_ConcentrationRiskByTypeAxis_9a3c844b-efd1-4a37-b78c-38da75d38886" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_9a3c844b-efd1-4a37-b78c-38da75d38886_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_9a3c844b-efd1-4a37-b78c-38da75d38886" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_9a3c844b-efd1-4a37-b78c-38da75d38886_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_96c5a8de-54f4-4296-a292-e2d228b71939" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_9a3c844b-efd1-4a37-b78c-38da75d38886" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_96c5a8de-54f4-4296-a292-e2d228b71939" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerConcentrationRiskMember_798cc657-14ab-440c-825e-5583f84dd7fc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CustomerConcentrationRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_96c5a8de-54f4-4296-a292-e2d228b71939" xlink:to="loc_us-gaap_CustomerConcentrationRiskMember_798cc657-14ab-440c-825e-5583f84dd7fc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_83c4f105-4ed5-489a-8a7d-dc0673cf1c7d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskPercentage1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_svco_AccountingPoliciesLineItems_514ad124-4aea-4728-b44b-509944250a4f" xlink:to="loc_us-gaap_ConcentrationRiskPercentage1_83c4f105-4ed5-489a-8a7d-dc0673cf1c7d" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://silvaco.com/role/SummaryofSignificantAccountingandReportingPoliciesNarrativeDetails" xlink:type="simple" xlink:href="svco-20250331.xsd#SummaryofSignificantAccountingandReportingPoliciesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://silvaco.com/role/SummaryofSignificantAccountingandReportingPoliciesNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_svco_AccountingPoliciesLineItems_a73372b3-1954-4415-b295-005e8984bcbc" xlink:href="svco-20250331.xsd#svco_AccountingPoliciesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_AccountingPoliciesTable_a76605d4-d0b0-49a1-9d67-8ae442804989" xlink:href="svco-20250331.xsd#svco_AccountingPoliciesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_svco_AccountingPoliciesLineItems_a73372b3-1954-4415-b295-005e8984bcbc" xlink:to="loc_svco_AccountingPoliciesTable_a76605d4-d0b0-49a1-9d67-8ae442804989" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_838e484a-6a75-41f2-bfb2-c4ce3d85bbf2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_svco_AccountingPoliciesTable_a76605d4-d0b0-49a1-9d67-8ae442804989" xlink:to="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_838e484a-6a75-41f2-bfb2-c4ce3d85bbf2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_838e484a-6a75-41f2-bfb2-c4ce3d85bbf2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_838e484a-6a75-41f2-bfb2-c4ce3d85bbf2" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_838e484a-6a75-41f2-bfb2-c4ce3d85bbf2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_0f2af5f8-2c9c-4c90-aff3-b0a95d7f149b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_838e484a-6a75-41f2-bfb2-c4ce3d85bbf2" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_0f2af5f8-2c9c-4c90-aff3-b0a95d7f149b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsMember_bf47aeb0-02f7-42c7-a678-6d490a933a96" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashAndCashEquivalentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_0f2af5f8-2c9c-4c90-aff3-b0a95d7f149b" xlink:to="loc_us-gaap_CashAndCashEquivalentsMember_bf47aeb0-02f7-42c7-a678-6d490a933a96" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_68a40874-3cdf-42da-9a67-0dc8cd28e946" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_svco_AccountingPoliciesTable_a76605d4-d0b0-49a1-9d67-8ae442804989" xlink:to="loc_us-gaap_ConcentrationRiskByTypeAxis_68a40874-3cdf-42da-9a67-0dc8cd28e946" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_68a40874-3cdf-42da-9a67-0dc8cd28e946_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_68a40874-3cdf-42da-9a67-0dc8cd28e946" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_68a40874-3cdf-42da-9a67-0dc8cd28e946_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_e435fff3-4183-4abe-b019-3b5046cea71e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_68a40874-3cdf-42da-9a67-0dc8cd28e946" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_e435fff3-4183-4abe-b019-3b5046cea71e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_FinancialInstitutionRiskMember_f0124e88-fd7d-4a78-8a11-940d4d2ce4e8" xlink:href="svco-20250331.xsd#svco_FinancialInstitutionRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_e435fff3-4183-4abe-b019-3b5046cea71e" xlink:to="loc_svco_FinancialInstitutionRiskMember_f0124e88-fd7d-4a78-8a11-940d4d2ce4e8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_FinancialInstutionAxis_ce647a7d-9187-42c1-bcfe-ff5d32f8e77d" xlink:href="svco-20250331.xsd#svco_FinancialInstutionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_svco_AccountingPoliciesTable_a76605d4-d0b0-49a1-9d67-8ae442804989" xlink:to="loc_svco_FinancialInstutionAxis_ce647a7d-9187-42c1-bcfe-ff5d32f8e77d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_FinancialInstutionDomain_ce647a7d-9187-42c1-bcfe-ff5d32f8e77d_default" xlink:href="svco-20250331.xsd#svco_FinancialInstutionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_svco_FinancialInstutionAxis_ce647a7d-9187-42c1-bcfe-ff5d32f8e77d" xlink:to="loc_svco_FinancialInstutionDomain_ce647a7d-9187-42c1-bcfe-ff5d32f8e77d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_FinancialInstutionDomain_c7e00311-f85b-4907-bc9e-fe7b5f2e9df5" xlink:href="svco-20250331.xsd#svco_FinancialInstutionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_svco_FinancialInstutionAxis_ce647a7d-9187-42c1-bcfe-ff5d32f8e77d" xlink:to="loc_svco_FinancialInstutionDomain_c7e00311-f85b-4907-bc9e-fe7b5f2e9df5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_OneFinancialInstitutionMember_e199c0f3-259b-465d-8b83-64621b52486b" xlink:href="svco-20250331.xsd#svco_OneFinancialInstitutionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_svco_FinancialInstutionDomain_c7e00311-f85b-4907-bc9e-fe7b5f2e9df5" xlink:to="loc_svco_OneFinancialInstitutionMember_e199c0f3-259b-465d-8b83-64621b52486b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_9a6b9520-ca0d-463c-8459-aa6f3c469ad9" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_svco_AccountingPoliciesTable_a76605d4-d0b0-49a1-9d67-8ae442804989" xlink:to="loc_srt_ConsolidatedEntitiesAxis_9a6b9520-ca0d-463c-8459-aa6f3c469ad9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_9a6b9520-ca0d-463c-8459-aa6f3c469ad9_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_9a6b9520-ca0d-463c-8459-aa6f3c469ad9" xlink:to="loc_srt_ConsolidatedEntitiesDomain_9a6b9520-ca0d-463c-8459-aa6f3c469ad9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_72f67928-ec8b-400c-9b8a-4dafebd53b70" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_9a6b9520-ca0d-463c-8459-aa6f3c469ad9" xlink:to="loc_srt_ConsolidatedEntitiesDomain_72f67928-ec8b-400c-9b8a-4dafebd53b70" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_ForeignSubsidiariesMember_c97b9466-381d-4cd4-8ff7-c19d614c779f" xlink:href="svco-20250331.xsd#svco_ForeignSubsidiariesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_72f67928-ec8b-400c-9b8a-4dafebd53b70" xlink:to="loc_svco_ForeignSubsidiariesMember_c97b9466-381d-4cd4-8ff7-c19d614c779f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_9c16f2fe-0e07-4dd8-b55d-8ac5cb5a0d6f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_svco_AccountingPoliciesLineItems_a73372b3-1954-4415-b295-005e8984bcbc" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_9c16f2fe-0e07-4dd8-b55d-8ac5cb5a0d6f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_4fa1fa18-b1fb-4a8d-8ef5-7191f0aa8a3b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskPercentage1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_svco_AccountingPoliciesLineItems_a73372b3-1954-4415-b295-005e8984bcbc" xlink:to="loc_us-gaap_ConcentrationRiskPercentage1_4fa1fa18-b1fb-4a8d-8ef5-7191f0aa8a3b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_f8b8b802-86a7-4fbe-a6a4-0a40f7480e5a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_svco_AccountingPoliciesLineItems_a73372b3-1954-4415-b295-005e8984bcbc" xlink:to="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_f8b8b802-86a7-4fbe-a6a4-0a40f7480e5a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossAfterTax_c87e9155-0f2e-4dc3-bc70-70e90ca1bacf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ForeignCurrencyTransactionGainLossAfterTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_svco_AccountingPoliciesLineItems_a73372b3-1954-4415-b295-005e8984bcbc" xlink:to="loc_us-gaap_ForeignCurrencyTransactionGainLossAfterTax_c87e9155-0f2e-4dc3-bc70-70e90ca1bacf" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://silvaco.com/role/SummaryofSignificantAccountingandReportingPoliciesScheduleofAntidilutiveSecuritiesExcludedfromComputationofEarningsPerShareDetails" xlink:type="simple" xlink:href="svco-20250331.xsd#SummaryofSignificantAccountingandReportingPoliciesScheduleofAntidilutiveSecuritiesExcludedfromComputationofEarningsPerShareDetails"/>
  <link:definitionLink xlink:role="http://silvaco.com/role/SummaryofSignificantAccountingandReportingPoliciesScheduleofAntidilutiveSecuritiesExcludedfromComputationofEarningsPerShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_svco_AccountingPoliciesLineItems_28347229-581e-4cde-988e-17c8934ca08d" xlink:href="svco-20250331.xsd#svco_AccountingPoliciesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_AccountingPoliciesTable_c2b40b6b-63d8-4872-a6c1-d03eb9f3ec86" xlink:href="svco-20250331.xsd#svco_AccountingPoliciesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_svco_AccountingPoliciesLineItems_28347229-581e-4cde-988e-17c8934ca08d" xlink:to="loc_svco_AccountingPoliciesTable_c2b40b6b-63d8-4872-a6c1-d03eb9f3ec86" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_27beccdd-9970-4c3e-8271-ecec93ad8935" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_svco_AccountingPoliciesTable_c2b40b6b-63d8-4872-a6c1-d03eb9f3ec86" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_27beccdd-9970-4c3e-8271-ecec93ad8935" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_27beccdd-9970-4c3e-8271-ecec93ad8935_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_27beccdd-9970-4c3e-8271-ecec93ad8935" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_27beccdd-9970-4c3e-8271-ecec93ad8935_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_66f38e61-625a-4c4e-a250-1c9385771df6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_27beccdd-9970-4c3e-8271-ecec93ad8935" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_66f38e61-625a-4c4e-a250-1c9385771df6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_982edbb3-f589-419c-ab86-6da065949886" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_66f38e61-625a-4c4e-a250-1c9385771df6" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_982edbb3-f589-419c-ab86-6da065949886" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_80a14c0f-8b1a-4795-b39d-fc6902daf2ac" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_svco_AccountingPoliciesLineItems_28347229-581e-4cde-988e-17c8934ca08d" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_80a14c0f-8b1a-4795-b39d-fc6902daf2ac" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://silvaco.com/role/RevenueDetails" xlink:type="simple" xlink:href="svco-20250331.xsd#RevenueDetails"/>
  <link:definitionLink xlink:role="http://silvaco.com/role/RevenueDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_e1c07302-15e5-47b3-add7-e779a6febc01" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_2d8a7c62-4548-4e48-8bdc-4fd847466ac0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_e1c07302-15e5-47b3-add7-e779a6febc01" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_2d8a7c62-4548-4e48-8bdc-4fd847466ac0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_ef948f8b-4750-4302-9313-f83605380a41" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_2d8a7c62-4548-4e48-8bdc-4fd847466ac0" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_ef948f8b-4750-4302-9313-f83605380a41" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_edfd284d-35b9-47ca-ac6b-e35fa21304d0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_e1c07302-15e5-47b3-add7-e779a6febc01" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_edfd284d-35b9-47ca-ac6b-e35fa21304d0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationPercentage_9917256b-b8b2-479e-936b-a4b41f45c446" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueRemainingPerformanceObligationPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_e1c07302-15e5-47b3-add7-e779a6febc01" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationPercentage_9917256b-b8b2-479e-936b-a4b41f45c446" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_6885c5c3-64ea-498a-aebf-f5136764f980" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_e1c07302-15e5-47b3-add7-e779a6febc01" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_6885c5c3-64ea-498a-aebf-f5136764f980" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_931beeb0-f3fd-4212-b7e3-c2e322adddd2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerLiabilityRevenueRecognized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_e1c07302-15e5-47b3-add7-e779a6febc01" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_931beeb0-f3fd-4212-b7e3-c2e322adddd2" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://silvaco.com/role/RevenueDetails_1" xlink:type="simple" xlink:href="svco-20250331.xsd#RevenueDetails_1"/>
  <link:definitionLink xlink:role="http://silvaco.com/role/RevenueDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_e1c07302-15e5-47b3-add7-e779a6febc01" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_2d8a7c62-4548-4e48-8bdc-4fd847466ac0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_e1c07302-15e5-47b3-add7-e779a6febc01" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_2d8a7c62-4548-4e48-8bdc-4fd847466ac0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_edfd284d-35b9-47ca-ac6b-e35fa21304d0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_e1c07302-15e5-47b3-add7-e779a6febc01" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_edfd284d-35b9-47ca-ac6b-e35fa21304d0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationPercentage_9917256b-b8b2-479e-936b-a4b41f45c446" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueRemainingPerformanceObligationPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_e1c07302-15e5-47b3-add7-e779a6febc01" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationPercentage_9917256b-b8b2-479e-936b-a4b41f45c446" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_6885c5c3-64ea-498a-aebf-f5136764f980" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_e1c07302-15e5-47b3-add7-e779a6febc01" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_6885c5c3-64ea-498a-aebf-f5136764f980" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_931beeb0-f3fd-4212-b7e3-c2e322adddd2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerLiabilityRevenueRecognized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_e1c07302-15e5-47b3-add7-e779a6febc01" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_931beeb0-f3fd-4212-b7e3-c2e322adddd2" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://silvaco.com/role/AcquisitionsNarrativeDetails" xlink:type="simple" xlink:href="svco-20250331.xsd#AcquisitionsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://silvaco.com/role/AcquisitionsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_5354018b-0dc8-4238-8387-d64f78abb8c8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_ccf0289b-323c-4e7b-a900-a75cf28dc80c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5354018b-0dc8-4238-8387-d64f78abb8c8" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_ccf0289b-323c-4e7b-a900-a75cf28dc80c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_d3f6dd77-2f36-419b-8574-9d801c90bb21" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_ccf0289b-323c-4e7b-a900-a75cf28dc80c" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_d3f6dd77-2f36-419b-8574-9d801c90bb21" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_d3f6dd77-2f36-419b-8574-9d801c90bb21_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_d3f6dd77-2f36-419b-8574-9d801c90bb21" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_d3f6dd77-2f36-419b-8574-9d801c90bb21_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_e5db1248-b55e-475a-900e-ed1e6068bac4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_d3f6dd77-2f36-419b-8574-9d801c90bb21" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_e5db1248-b55e-475a-900e-ed1e6068bac4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_OpticalProximityCorrectionSuiteOfToolsMember_7cf6b357-8ec1-461a-b9b1-664cd71aa387" xlink:href="svco-20250331.xsd#svco_OpticalProximityCorrectionSuiteOfToolsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_e5db1248-b55e-475a-900e-ed1e6068bac4" xlink:to="loc_svco_OpticalProximityCorrectionSuiteOfToolsMember_7cf6b357-8ec1-461a-b9b1-664cd71aa387" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesGross_cbb9da98-c1e7-42d3-be54-3675e7d648bb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsToAcquireBusinessesGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5354018b-0dc8-4238-8387-d64f78abb8c8" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesGross_cbb9da98-c1e7-42d3-be54-3675e7d648bb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_6d8d6efa-edda-464d-a4c9-d45b15ac43eb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationAcquisitionRelatedCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5354018b-0dc8-4238-8387-d64f78abb8c8" xlink:to="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_6d8d6efa-edda-464d-a4c9-d45b15ac43eb" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://silvaco.com/role/AcquisitionsAssetsAcquiredAndLiabilitiesAssumedDetails" xlink:type="simple" xlink:href="svco-20250331.xsd#AcquisitionsAssetsAcquiredAndLiabilitiesAssumedDetails"/>
  <link:definitionLink xlink:role="http://silvaco.com/role/AcquisitionsAssetsAcquiredAndLiabilitiesAssumedDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_daaaafa3-7dc1-431f-945c-aec30d446c9b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_952b9d77-f2fc-4a8d-9a92-cbb142f197ad" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_daaaafa3-7dc1-431f-945c-aec30d446c9b" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_952b9d77-f2fc-4a8d-9a92-cbb142f197ad" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_01f60dd6-b678-44d9-9c20-b7f935e6f72b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_952b9d77-f2fc-4a8d-9a92-cbb142f197ad" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_01f60dd6-b678-44d9-9c20-b7f935e6f72b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01f60dd6-b678-44d9-9c20-b7f935e6f72b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01f60dd6-b678-44d9-9c20-b7f935e6f72b" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01f60dd6-b678-44d9-9c20-b7f935e6f72b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_19b9d968-6f43-4571-9d64-2f307fed598b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01f60dd6-b678-44d9-9c20-b7f935e6f72b" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_19b9d968-6f43-4571-9d64-2f307fed598b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_OpticalProximityCorrectionSuiteOfToolsMember_a0e08797-0f00-415e-9cf7-e2789ab45d29" xlink:href="svco-20250331.xsd#svco_OpticalProximityCorrectionSuiteOfToolsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_19b9d968-6f43-4571-9d64-2f307fed598b" xlink:to="loc_svco_OpticalProximityCorrectionSuiteOfToolsMember_a0e08797-0f00-415e-9cf7-e2789ab45d29" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_e544d6ab-ccd9-4fd2-8a3b-2cec2eb8a8f0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_952b9d77-f2fc-4a8d-9a92-cbb142f197ad" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_e544d6ab-ccd9-4fd2-8a3b-2cec2eb8a8f0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_e544d6ab-ccd9-4fd2-8a3b-2cec2eb8a8f0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_e544d6ab-ccd9-4fd2-8a3b-2cec2eb8a8f0" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_e544d6ab-ccd9-4fd2-8a3b-2cec2eb8a8f0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_2517dffb-7c7f-4471-8a27-324db7de218e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_e544d6ab-ccd9-4fd2-8a3b-2cec2eb8a8f0" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_2517dffb-7c7f-4471-8a27-324db7de218e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DevelopedTechnologyRightsMember_50b98879-56d2-4c63-9f91-eab55bd11d4c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DevelopedTechnologyRightsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_2517dffb-7c7f-4471-8a27-324db7de218e" xlink:to="loc_us-gaap_DevelopedTechnologyRightsMember_50b98879-56d2-4c63-9f91-eab55bd11d4c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelationshipsMember_a0666cbb-24b4-4e9b-b054-6d97ecfdd27d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CustomerRelationshipsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_2517dffb-7c7f-4471-8a27-324db7de218e" xlink:to="loc_us-gaap_CustomerRelationshipsMember_a0666cbb-24b4-4e9b-b054-6d97ecfdd27d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractAsset_5ea0a803-5230-4a9c-9d0f-c1828703d2f9" xlink:href="svco-20250331.xsd#svco_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_daaaafa3-7dc1-431f-945c-aec30d446c9b" xlink:to="loc_svco_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractAsset_5ea0a803-5230-4a9c-9d0f-c1828703d2f9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_78e9d897-38f7-435f-bb9f-c9cdb4b70b0c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_daaaafa3-7dc1-431f-945c-aec30d446c9b" xlink:to="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_78e9d897-38f7-435f-bb9f-c9cdb4b70b0c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_92dae775-c21c-4ea7-b86d-ceb58505b7a0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_daaaafa3-7dc1-431f-945c-aec30d446c9b" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_92dae775-c21c-4ea7-b86d-ceb58505b7a0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_f117a4a1-299f-4867-9b40-749abec7ada2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_daaaafa3-7dc1-431f-945c-aec30d446c9b" xlink:to="loc_us-gaap_Goodwill_f117a4a1-299f-4867-9b40-749abec7ada2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue_cd023ac4-7864-4711-aa57-e4fa46cddf9d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_daaaafa3-7dc1-431f-945c-aec30d446c9b" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue_cd023ac4-7864-4711-aa57-e4fa46cddf9d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_2a8cd1de-852f-4451-a871-64f6e2113eca" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_daaaafa3-7dc1-431f-945c-aec30d446c9b" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_2a8cd1de-852f-4451-a871-64f6e2113eca" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://silvaco.com/role/GoodwillandIntangibleAssetsNarrativeDetails" xlink:type="simple" xlink:href="svco-20250331.xsd#GoodwillandIntangibleAssetsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://silvaco.com/role/GoodwillandIntangibleAssetsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_1b9c5cf5-9c71-4fd4-baf8-3f3a69eb65d3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_e501bb69-63f0-42f4-99ce-9e0f3f23ea57" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_1b9c5cf5-9c71-4fd4-baf8-3f3a69eb65d3" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_e501bb69-63f0-42f4-99ce-9e0f3f23ea57" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_6d4cbe1f-3a99-4ced-b2a4-c0d0b6434376" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeStatementLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_e501bb69-63f0-42f4-99ce-9e0f3f23ea57" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_6d4cbe1f-3a99-4ced-b2a4-c0d0b6434376" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_6d4cbe1f-3a99-4ced-b2a4-c0d0b6434376_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_6d4cbe1f-3a99-4ced-b2a4-c0d0b6434376" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_6d4cbe1f-3a99-4ced-b2a4-c0d0b6434376_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_082bc126-0f38-48a9-b679-d0972043059b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_6d4cbe1f-3a99-4ced-b2a4-c0d0b6434376" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_082bc126-0f38-48a9-b679-d0972043059b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfSalesMember_48dbbe3b-fd96-4dfc-b60a-e68a11ff3234" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CostOfSalesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_082bc126-0f38-48a9-b679-d0972043059b" xlink:to="loc_us-gaap_CostOfSalesMember_48dbbe3b-fd96-4dfc-b60a-e68a11ff3234" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_0ecb9e7b-2eb3-4bd5-802a-5b3ae979cfc8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_e501bb69-63f0-42f4-99ce-9e0f3f23ea57" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_0ecb9e7b-2eb3-4bd5-802a-5b3ae979cfc8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_0ecb9e7b-2eb3-4bd5-802a-5b3ae979cfc8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_0ecb9e7b-2eb3-4bd5-802a-5b3ae979cfc8" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_0ecb9e7b-2eb3-4bd5-802a-5b3ae979cfc8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_0955f031-7cc2-4de7-9adc-64309bde0e64" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_0ecb9e7b-2eb3-4bd5-802a-5b3ae979cfc8" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_0955f031-7cc2-4de7-9adc-64309bde0e64" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelationshipsMember_f043bd78-0442-4d48-b818-c12b787575a1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CustomerRelationshipsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_0955f031-7cc2-4de7-9adc-64309bde0e64" xlink:to="loc_us-gaap_CustomerRelationshipsMember_f043bd78-0442-4d48-b818-c12b787575a1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_DepreciatedIntangibleAssetsMember_5e02d2e3-8b29-4158-b7f4-1d89c1bc4152" xlink:href="svco-20250331.xsd#svco_DepreciatedIntangibleAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_0955f031-7cc2-4de7-9adc-64309bde0e64" xlink:to="loc_svco_DepreciatedIntangibleAssetsMember_5e02d2e3-8b29-4158-b7f4-1d89c1bc4152" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillPeriodIncreaseDecrease_f1c9def4-b19a-4bc5-801e-227f50beaa4e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GoodwillPeriodIncreaseDecrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_1b9c5cf5-9c71-4fd4-baf8-3f3a69eb65d3" xlink:to="loc_us-gaap_GoodwillPeriodIncreaseDecrease_f1c9def4-b19a-4bc5-801e-227f50beaa4e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_ae4d97d4-54a4-4fb4-b6e6-5739e6c985e3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_1b9c5cf5-9c71-4fd4-baf8-3f3a69eb65d3" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_ae4d97d4-54a4-4fb4-b6e6-5739e6c985e3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_65e1eee3-6194-4e9a-acf6-1e21d60615e4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_1b9c5cf5-9c71-4fd4-baf8-3f3a69eb65d3" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_65e1eee3-6194-4e9a-acf6-1e21d60615e4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_02721351-899f-4171-873d-be22834495c6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_1b9c5cf5-9c71-4fd4-baf8-3f3a69eb65d3" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_02721351-899f-4171-873d-be22834495c6" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://silvaco.com/role/GoodwillandIntangibleAssetsScheduleofFiniteLivedIntangibleAssetsDetails" xlink:type="simple" xlink:href="svco-20250331.xsd#GoodwillandIntangibleAssetsScheduleofFiniteLivedIntangibleAssetsDetails"/>
  <link:definitionLink xlink:role="http://silvaco.com/role/GoodwillandIntangibleAssetsScheduleofFiniteLivedIntangibleAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_d988d732-5ae0-42b8-aa8c-40a3d25970be" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_6a6d14c9-1906-4d11-9641-26a0e9f2d400" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_d988d732-5ae0-42b8-aa8c-40a3d25970be" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_6a6d14c9-1906-4d11-9641-26a0e9f2d400" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_66e27a9e-40a4-49e9-86d4-5b3f0815a6da" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_6a6d14c9-1906-4d11-9641-26a0e9f2d400" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_66e27a9e-40a4-49e9-86d4-5b3f0815a6da" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_66e27a9e-40a4-49e9-86d4-5b3f0815a6da_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_66e27a9e-40a4-49e9-86d4-5b3f0815a6da" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_66e27a9e-40a4-49e9-86d4-5b3f0815a6da_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_c9fee1f3-9373-4c41-a20f-6fee4c11a6e6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_66e27a9e-40a4-49e9-86d4-5b3f0815a6da" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_c9fee1f3-9373-4c41-a20f-6fee4c11a6e6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DevelopedTechnologyRightsMember_e2080e4f-bb63-4942-b101-d5e996c639d7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DevelopedTechnologyRightsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_c9fee1f3-9373-4c41-a20f-6fee4c11a6e6" xlink:to="loc_us-gaap_DevelopedTechnologyRightsMember_e2080e4f-bb63-4942-b101-d5e996c639d7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelationshipsMember_b7bf66b9-7220-4ac2-9265-35298847d663" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CustomerRelationshipsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_c9fee1f3-9373-4c41-a20f-6fee4c11a6e6" xlink:to="loc_us-gaap_CustomerRelationshipsMember_b7bf66b9-7220-4ac2-9265-35298847d663" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncompeteAgreementsMember_416ed351-6ced-49bb-90b5-f1450ef9cf43" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NoncompeteAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_c9fee1f3-9373-4c41-a20f-6fee4c11a6e6" xlink:to="loc_us-gaap_NoncompeteAgreementsMember_416ed351-6ced-49bb-90b5-f1450ef9cf43" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntellectualPropertyMember_17dade90-1de2-499e-90a3-ce9597945893" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IntellectualPropertyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_c9fee1f3-9373-4c41-a20f-6fee4c11a6e6" xlink:to="loc_us-gaap_IntellectualPropertyMember_17dade90-1de2-499e-90a3-ce9597945893" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_362ed7fe-c696-4bbe-9700-ffb3e2d19ef1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_d988d732-5ae0-42b8-aa8c-40a3d25970be" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_362ed7fe-c696-4bbe-9700-ffb3e2d19ef1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_cfd901f2-4376-46fb-9c68-7b4c30cce1e6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_d988d732-5ae0-42b8-aa8c-40a3d25970be" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_cfd901f2-4376-46fb-9c68-7b4c30cce1e6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_1f340e59-d5c4-4d85-8185-1e9eda732350" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_d988d732-5ae0-42b8-aa8c-40a3d25970be" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_1f340e59-d5c4-4d85-8185-1e9eda732350" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_4335f52d-03d2-486e-a901-220628163b17" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_d988d732-5ae0-42b8-aa8c-40a3d25970be" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_4335f52d-03d2-486e-a901-220628163b17" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://silvaco.com/role/RelatedPartiesDetails" xlink:type="simple" xlink:href="svco-20250331.xsd#RelatedPartiesDetails"/>
  <link:definitionLink xlink:role="http://silvaco.com/role/RelatedPartiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_cf2fd320-e2c0-4edd-953d-c366597bf6d7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_7eaecb37-fb73-425d-b77e-cee37b2b1975" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_cf2fd320-e2c0-4edd-953d-c366597bf6d7" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_7eaecb37-fb73-425d-b77e-cee37b2b1975" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_4be5955a-b885-47c6-a2cc-31a0c3c57c35" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_7eaecb37-fb73-425d-b77e-cee37b2b1975" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_4be5955a-b885-47c6-a2cc-31a0c3c57c35" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_4be5955a-b885-47c6-a2cc-31a0c3c57c35_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_4be5955a-b885-47c6-a2cc-31a0c3c57c35" xlink:to="loc_us-gaap_RelatedPartyDomain_4be5955a-b885-47c6-a2cc-31a0c3c57c35_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_61d31652-7b4d-4ca0-95e6-e9c71063fed6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_4be5955a-b885-47c6-a2cc-31a0c3c57c35" xlink:to="loc_us-gaap_RelatedPartyDomain_61d31652-7b4d-4ca0-95e6-e9c71063fed6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyMember_8f0bd35c-759b-4e9e-a21e-d3c03b2114c3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_61d31652-7b4d-4ca0-95e6-e9c71063fed6" xlink:to="loc_us-gaap_RelatedPartyMember_8f0bd35c-759b-4e9e-a21e-d3c03b2114c3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_8747b278-92ec-4903-a99c-d6c4c0aa7a83" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_CounterpartyNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_7eaecb37-fb73-425d-b77e-cee37b2b1975" xlink:to="loc_srt_CounterpartyNameAxis_8747b278-92ec-4903-a99c-d6c4c0aa7a83" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_8747b278-92ec-4903-a99c-d6c4c0aa7a83_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_8747b278-92ec-4903-a99c-d6c4c0aa7a83" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_8747b278-92ec-4903-a99c-d6c4c0aa7a83_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_3b537c29-5b9c-4e56-b691-d427ed1659e5" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_8747b278-92ec-4903-a99c-d6c4c0aa7a83" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_3b537c29-5b9c-4e56-b691-d427ed1659e5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_KipeeMember_8b1ba4b1-9940-4f9c-a408-c97c658413bb" xlink:href="svco-20250331.xsd#svco_KipeeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_3b537c29-5b9c-4e56-b691-d427ed1659e5" xlink:to="loc_svco_KipeeMember_8b1ba4b1-9940-4f9c-a408-c97c658413bb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_NewHorizonsCambridgeLTDAndNewHorizonsFranceMember_654f1069-2a67-4d12-bd31-30ef4ad563df" xlink:href="svco-20250331.xsd#svco_NewHorizonsCambridgeLTDAndNewHorizonsFranceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_3b537c29-5b9c-4e56-b691-d427ed1659e5" xlink:to="loc_svco_NewHorizonsCambridgeLTDAndNewHorizonsFranceMember_654f1069-2a67-4d12-bd31-30ef4ad563df" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_NewHorizonsCambridgeLTDMember_dbd09156-09b8-4bde-87b1-01b98894ec0e" xlink:href="svco-20250331.xsd#svco_NewHorizonsCambridgeLTDMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_3b537c29-5b9c-4e56-b691-d427ed1659e5" xlink:to="loc_svco_NewHorizonsCambridgeLTDMember_dbd09156-09b8-4bde-87b1-01b98894ec0e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_NewHorizonsFranceMember_51b468d4-39de-407c-92f0-01cb33946b54" xlink:href="svco-20250331.xsd#svco_NewHorizonsFranceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_3b537c29-5b9c-4e56-b691-d427ed1659e5" xlink:to="loc_svco_NewHorizonsFranceMember_51b468d4-39de-407c-92f0-01cb33946b54" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_01f9bb6e-46b5-4c29-afd9-4f29def2a293" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_7eaecb37-fb73-425d-b77e-cee37b2b1975" xlink:to="loc_us-gaap_DebtInstrumentAxis_01f9bb6e-46b5-4c29-afd9-4f29def2a293" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01f9bb6e-46b5-4c29-afd9-4f29def2a293_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_01f9bb6e-46b5-4c29-afd9-4f29def2a293" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01f9bb6e-46b5-4c29-afd9-4f29def2a293_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_ea2b7149-5bbb-4361-8ba4-1edb10bf2180" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_01f9bb6e-46b5-4c29-afd9-4f29def2a293" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_ea2b7149-5bbb-4361-8ba4-1edb10bf2180" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_A2022CreditLineMember_e9e0d7ee-40a3-4364-b172-e19cf837a0a2" xlink:href="svco-20250331.xsd#svco_A2022CreditLineMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_ea2b7149-5bbb-4361-8ba4-1edb10bf2180" xlink:to="loc_svco_A2022CreditLineMember_e9e0d7ee-40a3-4364-b172-e19cf837a0a2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_8ef3f9c4-7cb7-4a1c-ace1-246dfa2d539b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_7eaecb37-fb73-425d-b77e-cee37b2b1975" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_8ef3f9c4-7cb7-4a1c-ace1-246dfa2d539b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_8ef3f9c4-7cb7-4a1c-ace1-246dfa2d539b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_8ef3f9c4-7cb7-4a1c-ace1-246dfa2d539b" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_8ef3f9c4-7cb7-4a1c-ace1-246dfa2d539b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_ef15454c-b6c1-4464-8c97-bd78c16a701e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_8ef3f9c4-7cb7-4a1c-ace1-246dfa2d539b" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_ef15454c-b6c1-4464-8c97-bd78c16a701e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_5882106c-5835-42b8-bf5f-a694606e7325" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_ef15454c-b6c1-4464-8c97-bd78c16a701e" xlink:to="loc_us-gaap_LineOfCreditMember_5882106c-5835-42b8-bf5f-a694606e7325" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseExpense_3664f3e8-89c1-47d8-adaf-caa369659d66" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_cf2fd320-e2c0-4edd-953d-c366597bf6d7" xlink:to="loc_us-gaap_OperatingLeaseExpense_3664f3e8-89c1-47d8-adaf-caa369659d66" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseTermOfContract_36de7921-b92a-444d-b84e-57db561f5948" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseTermOfContract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_cf2fd320-e2c0-4edd-953d-c366597bf6d7" xlink:to="loc_us-gaap_LesseeOperatingLeaseTermOfContract_36de7921-b92a-444d-b84e-57db561f5948" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_NumberOfInternationalOfficeLeases_b86e38df-40f1-40e9-97f8-84bba7b017ad" xlink:href="svco-20250331.xsd#svco_NumberOfInternationalOfficeLeases"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_cf2fd320-e2c0-4edd-953d-c366597bf6d7" xlink:to="loc_svco_NumberOfInternationalOfficeLeases_b86e38df-40f1-40e9-97f8-84bba7b017ad" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_e1696ce6-43b4-4cec-b26c-cfff988b6195" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_cf2fd320-e2c0-4edd-953d-c366597bf6d7" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_e1696ce6-43b4-4cec-b26c-cfff988b6195" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_49786556-83ff-47a4-b0e0-161bc6f10869" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_cf2fd320-e2c0-4edd-953d-c366597bf6d7" xlink:to="loc_us-gaap_OperatingLeaseLiability_49786556-83ff-47a4-b0e0-161bc6f10869" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_ff47816d-0650-4122-afe6-b727f6765fb6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_cf2fd320-e2c0-4edd-953d-c366597bf6d7" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_ff47816d-0650-4122-afe6-b727f6765fb6" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseDebt_6911e943-21ea-4563-a189-44bd9dc6fe99" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestExpenseDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_cf2fd320-e2c0-4edd-953d-c366597bf6d7" xlink:to="loc_us-gaap_InterestExpenseDebt_6911e943-21ea-4563-a189-44bd9dc6fe99" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://silvaco.com/role/DebtandFinancingObligationsNarrativeDetails" xlink:type="simple" xlink:href="svco-20250331.xsd#DebtandFinancingObligationsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://silvaco.com/role/DebtandFinancingObligationsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_91ce16ee-1792-49c5-ba96-02bd2152ea8c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_d2b5a578-dad6-4b8e-ae19-c91d162ed016" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_91ce16ee-1792-49c5-ba96-02bd2152ea8c" xlink:to="loc_us-gaap_DebtInstrumentTable_d2b5a578-dad6-4b8e-ae19-c91d162ed016" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_0e09bfcc-14ce-41de-84e9-0c74188ad7aa" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_d2b5a578-dad6-4b8e-ae19-c91d162ed016" xlink:to="loc_us-gaap_DebtInstrumentAxis_0e09bfcc-14ce-41de-84e9-0c74188ad7aa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_0e09bfcc-14ce-41de-84e9-0c74188ad7aa_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_0e09bfcc-14ce-41de-84e9-0c74188ad7aa" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_0e09bfcc-14ce-41de-84e9-0c74188ad7aa_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_18fb7b17-16d1-4977-9b9c-5b6813df6af6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_0e09bfcc-14ce-41de-84e9-0c74188ad7aa" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_18fb7b17-16d1-4977-9b9c-5b6813df6af6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_EastWestBankLoanMember_3890768c-898b-4b57-a9d8-60003c0a1e86" xlink:href="svco-20250331.xsd#svco_EastWestBankLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_18fb7b17-16d1-4977-9b9c-5b6813df6af6" xlink:to="loc_svco_EastWestBankLoanMember_3890768c-898b-4b57-a9d8-60003c0a1e86" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_2108782b-53d6-4cb9-a1ea-299212ea9eca" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_d2b5a578-dad6-4b8e-ae19-c91d162ed016" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_2108782b-53d6-4cb9-a1ea-299212ea9eca" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_2108782b-53d6-4cb9-a1ea-299212ea9eca_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_2108782b-53d6-4cb9-a1ea-299212ea9eca" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_2108782b-53d6-4cb9-a1ea-299212ea9eca_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_bd4f011b-bbc7-4671-9f55-9bd6e96a20f8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_2108782b-53d6-4cb9-a1ea-299212ea9eca" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_bd4f011b-bbc7-4671-9f55-9bd6e96a20f8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_dcfc0be4-7575-43d5-a03c-1ea288233f20" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_bd4f011b-bbc7-4671-9f55-9bd6e96a20f8" xlink:to="loc_us-gaap_LineOfCreditMember_dcfc0be4-7575-43d5-a03c-1ea288233f20" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_a8160361-bcbd-4ee8-9237-734d86240eb7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_d2b5a578-dad6-4b8e-ae19-c91d162ed016" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_a8160361-bcbd-4ee8-9237-734d86240eb7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_a8160361-bcbd-4ee8-9237-734d86240eb7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_a8160361-bcbd-4ee8-9237-734d86240eb7" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_a8160361-bcbd-4ee8-9237-734d86240eb7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_acde83f6-1a31-4c90-8cdc-512b3aadcc9c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_a8160361-bcbd-4ee8-9237-734d86240eb7" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_acde83f6-1a31-4c90-8cdc-512b3aadcc9c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntellectualPropertyMember_8564a46a-3534-4ab6-8481-8bc3c80c07cb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IntellectualPropertyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_acde83f6-1a31-4c90-8cdc-512b3aadcc9c" xlink:to="loc_us-gaap_IntellectualPropertyMember_8564a46a-3534-4ab6-8481-8bc3c80c07cb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_87eba98a-3b19-40dc-a61d-6f78d01e8dbc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_91ce16ee-1792-49c5-ba96-02bd2152ea8c" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_87eba98a-3b19-40dc-a61d-6f78d01e8dbc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_b5ec1c4b-1639-4473-bb0f-93bbecbf24c3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_91ce16ee-1792-49c5-ba96-02bd2152ea8c" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_b5ec1c4b-1639-4473-bb0f-93bbecbf24c3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_605e3d85-abbb-430c-96f7-66235e92eee0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_91ce16ee-1792-49c5-ba96-02bd2152ea8c" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_605e3d85-abbb-430c-96f7-66235e92eee0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfOtherLongTermDebt_fffaed6f-eb5d-48d7-986c-5cef147d1662" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromIssuanceOfOtherLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_91ce16ee-1792-49c5-ba96-02bd2152ea8c" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfOtherLongTermDebt_fffaed6f-eb5d-48d7-986c-5cef147d1662" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseDebt_e95ec5bc-71e0-449d-9c62-e0280cc2a118" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestExpenseDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_91ce16ee-1792-49c5-ba96-02bd2152ea8c" xlink:to="loc_us-gaap_InterestExpenseDebt_e95ec5bc-71e0-449d-9c62-e0280cc2a118" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfOtherLongTermDebt_f0d014c4-aaf2-4a75-a93a-e47a426f6967" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RepaymentsOfOtherLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_91ce16ee-1792-49c5-ba96-02bd2152ea8c" xlink:to="loc_us-gaap_RepaymentsOfOtherLongTermDebt_f0d014c4-aaf2-4a75-a93a-e47a426f6967" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_FiniteLivedIntangibleAssetTotalCashConsiderationToBePaid_4752456e-e436-42fd-988b-5b43d0b2b35a" xlink:href="svco-20250331.xsd#svco_FiniteLivedIntangibleAssetTotalCashConsiderationToBePaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_91ce16ee-1792-49c5-ba96-02bd2152ea8c" xlink:to="loc_svco_FiniteLivedIntangibleAssetTotalCashConsiderationToBePaid_4752456e-e436-42fd-988b-5b43d0b2b35a" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_FiniteLivedIntangibleAssetConsiderationPaymentPeriod_0c670ed7-fee9-4fec-ad1d-12648665d301" xlink:href="svco-20250331.xsd#svco_FiniteLivedIntangibleAssetConsiderationPaymentPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_91ce16ee-1792-49c5-ba96-02bd2152ea8c" xlink:to="loc_svco_FiniteLivedIntangibleAssetConsiderationPaymentPeriod_0c670ed7-fee9-4fec-ad1d-12648665d301" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SupplierFinanceProgramObligation_d61cb058-cd27-4a38-8db5-8a67cde54fb1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SupplierFinanceProgramObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_91ce16ee-1792-49c5-ba96-02bd2152ea8c" xlink:to="loc_us-gaap_SupplierFinanceProgramObligation_d61cb058-cd27-4a38-8db5-8a67cde54fb1" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_SupplierFinanceProgramObligationImputedInterestRate_52b2bbb9-7e79-482d-913a-70e8fe1672fb" xlink:href="svco-20250331.xsd#svco_SupplierFinanceProgramObligationImputedInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_91ce16ee-1792-49c5-ba96-02bd2152ea8c" xlink:to="loc_svco_SupplierFinanceProgramObligationImputedInterestRate_52b2bbb9-7e79-482d-913a-70e8fe1672fb" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_InterestExpenseSupplierFinanceObligation_ca36d11c-0478-40de-aea4-fd1211554d6e" xlink:href="svco-20250331.xsd#svco_InterestExpenseSupplierFinanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_91ce16ee-1792-49c5-ba96-02bd2152ea8c" xlink:to="loc_svco_InterestExpenseSupplierFinanceObligation_ca36d11c-0478-40de-aea4-fd1211554d6e" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://silvaco.com/role/StockBasedCompensationNarrativeDetails" xlink:type="simple" xlink:href="svco-20250331.xsd#StockBasedCompensationNarrativeDetails"/>
  <link:definitionLink xlink:role="http://silvaco.com/role/StockBasedCompensationNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_b3c77f41-733c-439d-813b-0dfa9b781168" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_81b75199-1e1f-42f8-a20c-3fc0b568eb37" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_b3c77f41-733c-439d-813b-0dfa9b781168" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_81b75199-1e1f-42f8-a20c-3fc0b568eb37" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_d085ea8e-d5c4-4c06-9c36-b51a24dcf3af" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_81b75199-1e1f-42f8-a20c-3fc0b568eb37" xlink:to="loc_us-gaap_AwardTypeAxis_d085ea8e-d5c4-4c06-9c36-b51a24dcf3af" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_d085ea8e-d5c4-4c06-9c36-b51a24dcf3af_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_d085ea8e-d5c4-4c06-9c36-b51a24dcf3af" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_d085ea8e-d5c4-4c06-9c36-b51a24dcf3af_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_9193a7d1-573c-4f24-ab7e-e0158373338b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_d085ea8e-d5c4-4c06-9c36-b51a24dcf3af" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_9193a7d1-573c-4f24-ab7e-e0158373338b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_2e4c658d-78ca-4d32-af99-9898bc51804b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_9193a7d1-573c-4f24-ab7e-e0158373338b" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_2e4c658d-78ca-4d32-af99-9898bc51804b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_RestrictedStockUnitsRSUsLiquidityEventBasedMember_20bc7c3f-f1ed-4605-84ab-b2c49a1c7e6c" xlink:href="svco-20250331.xsd#svco_RestrictedStockUnitsRSUsLiquidityEventBasedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedStockUnitsRSUMember_2e4c658d-78ca-4d32-af99-9898bc51804b" xlink:to="loc_svco_RestrictedStockUnitsRSUsLiquidityEventBasedMember_20bc7c3f-f1ed-4605-84ab-b2c49a1c7e6c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_RestrictedStockUnitsRSUsTimeBasedMember_ec5e5c83-d424-49ff-ac42-2f1ac04b2af9" xlink:href="svco-20250331.xsd#svco_RestrictedStockUnitsRSUsTimeBasedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedStockUnitsRSUMember_2e4c658d-78ca-4d32-af99-9898bc51804b" xlink:to="loc_svco_RestrictedStockUnitsRSUsTimeBasedMember_ec5e5c83-d424-49ff-ac42-2f1ac04b2af9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VestingAxis_395f8123-1417-405e-a47a-6d06d4499b86" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VestingAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_81b75199-1e1f-42f8-a20c-3fc0b568eb37" xlink:to="loc_us-gaap_VestingAxis_395f8123-1417-405e-a47a-6d06d4499b86" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VestingDomain_395f8123-1417-405e-a47a-6d06d4499b86_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VestingDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VestingAxis_395f8123-1417-405e-a47a-6d06d4499b86" xlink:to="loc_us-gaap_VestingDomain_395f8123-1417-405e-a47a-6d06d4499b86_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VestingDomain_c076b42b-f47d-4adc-8bc0-7dcb35afb709" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VestingDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VestingAxis_395f8123-1417-405e-a47a-6d06d4499b86" xlink:to="loc_us-gaap_VestingDomain_c076b42b-f47d-4adc-8bc0-7dcb35afb709" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationAwardTrancheOneMember_4d70d936-6980-4207-9ce8-fdf41c73ddd1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationAwardTrancheOneMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VestingDomain_c076b42b-f47d-4adc-8bc0-7dcb35afb709" xlink:to="loc_us-gaap_ShareBasedCompensationAwardTrancheOneMember_4d70d936-6980-4207-9ce8-fdf41c73ddd1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationAwardTrancheTwoMember_126d976c-96fb-4320-9abd-cd0899a2758f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationAwardTrancheTwoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VestingDomain_c076b42b-f47d-4adc-8bc0-7dcb35afb709" xlink:to="loc_us-gaap_ShareBasedCompensationAwardTrancheTwoMember_126d976c-96fb-4320-9abd-cd0899a2758f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_095f6f0e-4485-4922-99f8-296fec0adb2f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_b3c77f41-733c-439d-813b-0dfa9b781168" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_095f6f0e-4485-4922-99f8-296fec0adb2f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_899a703a-468f-4555-b179-bb018953df6b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockCapitalSharesReservedForFutureIssuance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_b3c77f41-733c-439d-813b-0dfa9b781168" xlink:to="loc_us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_899a703a-468f-4555-b179-bb018953df6b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfVestingRequirements_f671986f-3b1c-4a7c-b45d-a30e4cc427bb" xlink:href="svco-20250331.xsd#svco_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfVestingRequirements"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_b3c77f41-733c-439d-813b-0dfa9b781168" xlink:to="loc_svco_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfVestingRequirements_f671986f-3b1c-4a7c-b45d-a30e4cc427bb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_7c8cba34-42a0-451e-bb1b-a16c38fbdfdd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_b3c77f41-733c-439d-813b-0dfa9b781168" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_7c8cba34-42a0-451e-bb1b-a16c38fbdfdd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_2ce24d9e-c471-4ed2-837d-6f1278d11678" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_b3c77f41-733c-439d-813b-0dfa9b781168" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_2ce24d9e-c471-4ed2-837d-6f1278d11678" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_cae14a0f-9fc2-4038-97ed-f25c086ae541" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_b3c77f41-733c-439d-813b-0dfa9b781168" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_cae14a0f-9fc2-4038-97ed-f25c086ae541" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1_fcbc21be-d720-4863-9098-400d207cef62" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_b3c77f41-733c-439d-813b-0dfa9b781168" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1_fcbc21be-d720-4863-9098-400d207cef62" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_DeferredCompensationArrangementWithIndividualSharesRequiredToIssuedIfFinalized_85da5fb2-24a2-4646-8d0e-617855cb32d0" xlink:href="svco-20250331.xsd#svco_DeferredCompensationArrangementWithIndividualSharesRequiredToIssuedIfFinalized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_b3c77f41-733c-439d-813b-0dfa9b781168" xlink:to="loc_svco_DeferredCompensationArrangementWithIndividualSharesRequiredToIssuedIfFinalized_85da5fb2-24a2-4646-8d0e-617855cb32d0" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_cd19ca95-708b-4f80-ab99-bd142697705d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_b3c77f41-733c-439d-813b-0dfa9b781168" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_cd19ca95-708b-4f80-ab99-bd142697705d" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_0bc34dca-16e5-457e-8c2e-4e60746bc67b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_b3c77f41-733c-439d-813b-0dfa9b781168" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_0bc34dca-16e5-457e-8c2e-4e60746bc67b" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_29c8acc7-25be-4aa7-9035-015607cdd549" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_b3c77f41-733c-439d-813b-0dfa9b781168" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_29c8acc7-25be-4aa7-9035-015607cdd549" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://silvaco.com/role/StockBasedCompensationScheduleofShareBasedPaymentArrangementRestrictedStockandRestrictedStockUnitActivityDetails" xlink:type="simple" xlink:href="svco-20250331.xsd#StockBasedCompensationScheduleofShareBasedPaymentArrangementRestrictedStockandRestrictedStockUnitActivityDetails"/>
  <link:definitionLink xlink:role="http://silvaco.com/role/StockBasedCompensationScheduleofShareBasedPaymentArrangementRestrictedStockandRestrictedStockUnitActivityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_ece57251-f7fd-4711-b5a7-252145f63a62" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_fe027597-dae5-4fcc-b57a-44aea0db5e68" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_ece57251-f7fd-4711-b5a7-252145f63a62" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_fe027597-dae5-4fcc-b57a-44aea0db5e68" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_5983930c-9344-47ae-a1f0-439386b7e2da" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_fe027597-dae5-4fcc-b57a-44aea0db5e68" xlink:to="loc_us-gaap_AwardTypeAxis_5983930c-9344-47ae-a1f0-439386b7e2da" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_5983930c-9344-47ae-a1f0-439386b7e2da_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_5983930c-9344-47ae-a1f0-439386b7e2da" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_5983930c-9344-47ae-a1f0-439386b7e2da_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_74405af0-c2ef-426d-9fae-9d407b8ed77f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_5983930c-9344-47ae-a1f0-439386b7e2da" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_74405af0-c2ef-426d-9fae-9d407b8ed77f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_cad7e748-e235-47cb-a7a8-61207c042fea" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_74405af0-c2ef-426d-9fae-9d407b8ed77f" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_cad7e748-e235-47cb-a7a8-61207c042fea" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_3949fd46-3e04-4614-9877-4b0ca80f978e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_ece57251-f7fd-4711-b5a7-252145f63a62" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_3949fd46-3e04-4614-9877-4b0ca80f978e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_2b36fe59-4390-4e4c-8f8f-5a020c955eea" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_3949fd46-3e04-4614-9877-4b0ca80f978e" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_2b36fe59-4390-4e4c-8f8f-5a020c955eea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_a8e9de67-9727-4df8-bba8-e6522a2e6a10" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_3949fd46-3e04-4614-9877-4b0ca80f978e" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_a8e9de67-9727-4df8-bba8-e6522a2e6a10" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_2ff6bdde-c3d0-4ac5-8c7a-f4e91e9c2a64" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_3949fd46-3e04-4614-9877-4b0ca80f978e" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_2ff6bdde-c3d0-4ac5-8c7a-f4e91e9c2a64" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_4c4ee1d2-b16b-46c3-8b89-129366217019" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_3949fd46-3e04-4614-9877-4b0ca80f978e" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_4c4ee1d2-b16b-46c3-8b89-129366217019" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_d3a0daa4-44f5-4990-be64-c8a22b4b0c6c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract_d225ec30-e091-4cca-baac-59654ad38cf2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_ece57251-f7fd-4711-b5a7-252145f63a62" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract_d225ec30-e091-4cca-baac-59654ad38cf2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms_8d7b0b42-4b20-4b91-94c9-9f0b47c85949" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract_d225ec30-e091-4cca-baac-59654ad38cf2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms_8d7b0b42-4b20-4b91-94c9-9f0b47c85949" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageRemainingContractualTerms_07383287-1c30-47bb-baa0-7851111e4560" xlink:href="svco-20250331.xsd#svco_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageRemainingContractualTerms"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract_d225ec30-e091-4cca-baac-59654ad38cf2" xlink:to="loc_svco_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageRemainingContractualTerms_07383287-1c30-47bb-baa0-7851111e4560" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageRemainingContractualTerms_cab5913f-3312-483b-ada2-eff0ce65b629" xlink:href="svco-20250331.xsd#svco_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageRemainingContractualTerms"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract_d225ec30-e091-4cca-baac-59654ad38cf2" xlink:to="loc_svco_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageRemainingContractualTerms_cab5913f-3312-483b-ada2-eff0ce65b629" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresInPeriodWeightedAverageRemainingContractualTerms_76b7d98f-a9ca-4531-840f-d2fd3c3fe176" xlink:href="svco-20250331.xsd#svco_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresInPeriodWeightedAverageRemainingContractualTerms"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract_d225ec30-e091-4cca-baac-59654ad38cf2" xlink:to="loc_svco_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresInPeriodWeightedAverageRemainingContractualTerms_76b7d98f-a9ca-4531-840f-d2fd3c3fe176" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_5ff73edb-d740-406e-b9ef-db7894b12d99" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_ece57251-f7fd-4711-b5a7-252145f63a62" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_5ff73edb-d740-406e-b9ef-db7894b12d99" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_eddd1644-f61a-4318-ad9e-8ffcab323ad7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_5ff73edb-d740-406e-b9ef-db7894b12d99" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_eddd1644-f61a-4318-ad9e-8ffcab323ad7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_f09f144f-bd3f-4957-9055-f57ae17a9466" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_5ff73edb-d740-406e-b9ef-db7894b12d99" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_f09f144f-bd3f-4957-9055-f57ae17a9466" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_33c43cd2-baf9-4ca1-bb29-cda6912da34a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_5ff73edb-d740-406e-b9ef-db7894b12d99" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_33c43cd2-baf9-4ca1-bb29-cda6912da34a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_48e2a4de-be78-47dc-8140-8460eaa3a677" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_5ff73edb-d740-406e-b9ef-db7894b12d99" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_48e2a4de-be78-47dc-8140-8460eaa3a677" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_620d4c3f-060c-4e0a-b8fe-fc33e94768b1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://silvaco.com/role/StockBasedCompensationScheduleofShareBasedPaymentArrangementExpensedandCapitalizedAmountDetails" xlink:type="simple" xlink:href="svco-20250331.xsd#StockBasedCompensationScheduleofShareBasedPaymentArrangementExpensedandCapitalizedAmountDetails"/>
  <link:definitionLink xlink:role="http://silvaco.com/role/StockBasedCompensationScheduleofShareBasedPaymentArrangementExpensedandCapitalizedAmountDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_744280d6-eaf8-4135-9f3f-c29d952cd7dc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_886379d8-e069-42da-92fd-c1e0979947b7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_744280d6-eaf8-4135-9f3f-c29d952cd7dc" xlink:to="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_886379d8-e069-42da-92fd-c1e0979947b7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_83862834-4898-4dcc-a66b-57cd4821fb14" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeStatementLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_886379d8-e069-42da-92fd-c1e0979947b7" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_83862834-4898-4dcc-a66b-57cd4821fb14" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_83862834-4898-4dcc-a66b-57cd4821fb14_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_83862834-4898-4dcc-a66b-57cd4821fb14" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_83862834-4898-4dcc-a66b-57cd4821fb14_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_ad1d82cc-b647-47f3-865b-399e984a78e5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_83862834-4898-4dcc-a66b-57cd4821fb14" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_ad1d82cc-b647-47f3-865b-399e984a78e5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfSalesMember_5c049994-8ee3-48ff-874f-49b1592b140d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CostOfSalesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_ad1d82cc-b647-47f3-865b-399e984a78e5" xlink:to="loc_us-gaap_CostOfSalesMember_5c049994-8ee3-48ff-874f-49b1592b140d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpenseMember_8417c777-59fa-4da1-8b65-05c24e1038ca" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ResearchAndDevelopmentExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_ad1d82cc-b647-47f3-865b-399e984a78e5" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpenseMember_8417c777-59fa-4da1-8b65-05c24e1038ca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingAndMarketingExpenseMember_73ce46f1-88c5-4ddf-8873-fe041dedb15e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SellingAndMarketingExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_ad1d82cc-b647-47f3-865b-399e984a78e5" xlink:to="loc_us-gaap_SellingAndMarketingExpenseMember_73ce46f1-88c5-4ddf-8873-fe041dedb15e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpenseMember_22d6d289-992d-4a84-b528-9aecea2b47c0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GeneralAndAdministrativeExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_ad1d82cc-b647-47f3-865b-399e984a78e5" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpenseMember_22d6d289-992d-4a84-b528-9aecea2b47c0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_3a6bfecf-dfe8-49e7-92f3-c3ce41833dd0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_744280d6-eaf8-4135-9f3f-c29d952cd7dc" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_3a6bfecf-dfe8-49e7-92f3-c3ce41833dd0" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://silvaco.com/role/SegmentReportingScheduleofReconciliationofOperatingProfitLossfromSegmentstoConsolidatedDetails" xlink:type="simple" xlink:href="svco-20250331.xsd#SegmentReportingScheduleofReconciliationofOperatingProfitLossfromSegmentstoConsolidatedDetails"/>
  <link:definitionLink xlink:role="http://silvaco.com/role/SegmentReportingScheduleofReconciliationofOperatingProfitLossfromSegmentstoConsolidatedDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingAssetReconcilingItemLineItems_cd3bc4c5-33e6-4453-a3ab-29e72e94b7db" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SegmentReportingAssetReconcilingItemLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTable_1373b5b8-473d-4d56-b444-40c95d5bdedb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingAssetReconcilingItemLineItems_cd3bc4c5-33e6-4453-a3ab-29e72e94b7db" xlink:to="loc_us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTable_1373b5b8-473d-4d56-b444-40c95d5bdedb" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_04342a11-f24d-4dc8-bea0-475b05da15a1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTable_1373b5b8-473d-4d56-b444-40c95d5bdedb" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_04342a11-f24d-4dc8-bea0-475b05da15a1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_04342a11-f24d-4dc8-bea0-475b05da15a1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_04342a11-f24d-4dc8-bea0-475b05da15a1" xlink:to="loc_us-gaap_SegmentDomain_04342a11-f24d-4dc8-bea0-475b05da15a1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_e9983aca-9de6-4d1f-860a-761d499c3ccf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_04342a11-f24d-4dc8-bea0-475b05da15a1" xlink:to="loc_us-gaap_SegmentDomain_e9983aca-9de6-4d1f-860a-761d499c3ccf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_ReportableSegmentMember_5a5fc8d6-ec29-47eb-baed-4f4c55309dcf" xlink:href="svco-20250331.xsd#svco_ReportableSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_e9983aca-9de6-4d1f-860a-761d499c3ccf" xlink:to="loc_svco_ReportableSegmentMember_5a5fc8d6-ec29-47eb-baed-4f4c55309dcf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_709650dd-98b9-4ceb-b1f5-b56d06c44272" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingAssetReconcilingItemLineItems_cd3bc4c5-33e6-4453-a3ab-29e72e94b7db" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_709650dd-98b9-4ceb-b1f5-b56d06c44272" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalariesWagesAndOfficersCompensation_75382380-3c7d-4cfa-a5a3-5227ee097d0e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SalariesWagesAndOfficersCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingAssetReconcilingItemLineItems_cd3bc4c5-33e6-4453-a3ab-29e72e94b7db" xlink:to="loc_us-gaap_SalariesWagesAndOfficersCompensation_75382380-3c7d-4cfa-a5a3-5227ee097d0e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherExpenses_b5e1ee91-d6ae-4d4d-b736-c034785b9677" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingAssetReconcilingItemLineItems_cd3bc4c5-33e6-4453-a3ab-29e72e94b7db" xlink:to="loc_us-gaap_OtherExpenses_b5e1ee91-d6ae-4d4d-b736-c034785b9677" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpenses_8632777f-9f5c-4eca-a374-0af31a7c2bf4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CostsAndExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingAssetReconcilingItemLineItems_cd3bc4c5-33e6-4453-a3ab-29e72e94b7db" xlink:to="loc_us-gaap_CostsAndExpenses_8632777f-9f5c-4eca-a374-0af31a7c2bf4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_4257ea3f-3f1b-4300-a761-88baf8fdb144" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingAssetReconcilingItemLineItems_cd3bc4c5-33e6-4453-a3ab-29e72e94b7db" xlink:to="loc_us-gaap_NetIncomeLoss_4257ea3f-3f1b-4300-a761-88baf8fdb144" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://silvaco.com/role/CommitmentsandContingenciesDetails" xlink:type="simple" xlink:href="svco-20250331.xsd#CommitmentsandContingenciesDetails"/>
  <link:definitionLink xlink:role="http://silvaco.com/role/CommitmentsandContingenciesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesLineItems_85209856-6efb-4202-8812-abbd4e550305" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LossContingenciesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesTable_8be9203e-c7b0-43df-b141-e15653884130" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LossContingenciesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LossContingenciesLineItems_85209856-6efb-4202-8812-abbd4e550305" xlink:to="loc_us-gaap_LossContingenciesTable_8be9203e-c7b0-43df-b141-e15653884130" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_a039a5b2-54c6-47d5-91d3-c2bff88624ca" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_8be9203e-c7b0-43df-b141-e15653884130" xlink:to="loc_srt_ProductOrServiceAxis_a039a5b2-54c6-47d5-91d3-c2bff88624ca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_a039a5b2-54c6-47d5-91d3-c2bff88624ca_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_a039a5b2-54c6-47d5-91d3-c2bff88624ca" xlink:to="loc_srt_ProductsAndServicesDomain_a039a5b2-54c6-47d5-91d3-c2bff88624ca_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_2e8586b5-e39c-4b4c-937b-b88a4427a6ff" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_a039a5b2-54c6-47d5-91d3-c2bff88624ca" xlink:to="loc_srt_ProductsAndServicesDomain_2e8586b5-e39c-4b4c-937b-b88a4427a6ff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_SoftwareLicensesMember_b5a8685d-b8aa-47a3-9e3b-26391507f3a3" xlink:href="svco-20250331.xsd#svco_SoftwareLicensesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_2e8586b5-e39c-4b4c-937b-b88a4427a6ff" xlink:to="loc_svco_SoftwareLicensesMember_b5a8685d-b8aa-47a3-9e3b-26391507f3a3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_OtherToolsMember_e5005f21-27e9-463c-87f3-360213fecce3" xlink:href="svco-20250331.xsd#svco_OtherToolsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_2e8586b5-e39c-4b4c-937b-b88a4427a6ff" xlink:to="loc_svco_OtherToolsMember_e5005f21-27e9-463c-87f3-360213fecce3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseAxis_35ef16d0-a0df-4f5a-9733-a42c70d85ee5" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_LitigationCaseAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_8be9203e-c7b0-43df-b141-e15653884130" xlink:to="loc_srt_LitigationCaseAxis_35ef16d0-a0df-4f5a-9733-a42c70d85ee5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseTypeDomain_35ef16d0-a0df-4f5a-9733-a42c70d85ee5_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_LitigationCaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_LitigationCaseAxis_35ef16d0-a0df-4f5a-9733-a42c70d85ee5" xlink:to="loc_srt_LitigationCaseTypeDomain_35ef16d0-a0df-4f5a-9733-a42c70d85ee5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseTypeDomain_87cc5acb-bde5-4540-ab27-366da5ed24be" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_LitigationCaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_LitigationCaseAxis_35ef16d0-a0df-4f5a-9733-a42c70d85ee5" xlink:to="loc_srt_LitigationCaseTypeDomain_87cc5acb-bde5-4540-ab27-366da5ed24be" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_NangatePartiesCrossComplaintMember_80b434d9-eee0-4912-8c63-7f0b196bd194" xlink:href="svco-20250331.xsd#svco_NangatePartiesCrossComplaintMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_87cc5acb-bde5-4540-ab27-366da5ed24be" xlink:to="loc_svco_NangatePartiesCrossComplaintMember_80b434d9-eee0-4912-8c63-7f0b196bd194" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_5045cc45-f57c-4aa7-9d8e-19df6b33b6bf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LossContingenciesByNatureOfContingencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_8be9203e-c7b0-43df-b141-e15653884130" xlink:to="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_5045cc45-f57c-4aa7-9d8e-19df6b33b6bf" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyNatureDomain_5045cc45-f57c-4aa7-9d8e-19df6b33b6bf_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LossContingencyNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_5045cc45-f57c-4aa7-9d8e-19df6b33b6bf" xlink:to="loc_us-gaap_LossContingencyNatureDomain_5045cc45-f57c-4aa7-9d8e-19df6b33b6bf_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyNatureDomain_ff66f094-c76d-4175-a747-13fe1d20e537" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LossContingencyNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_5045cc45-f57c-4aa7-9d8e-19df6b33b6bf" xlink:to="loc_us-gaap_LossContingencyNatureDomain_ff66f094-c76d-4175-a747-13fe1d20e537" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_FraudDamagesExcludingPunitiveDamagesMember_d3b8976c-a108-4d3d-8e72-fdd8ce2e569f" xlink:href="svco-20250331.xsd#svco_FraudDamagesExcludingPunitiveDamagesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_ff66f094-c76d-4175-a747-13fe1d20e537" xlink:to="loc_svco_FraudDamagesExcludingPunitiveDamagesMember_d3b8976c-a108-4d3d-8e72-fdd8ce2e569f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_PunitiveDamagesMember_dc41e61f-99ce-4016-9b1b-55b8763f4d69" xlink:href="svco-20250331.xsd#svco_PunitiveDamagesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_ff66f094-c76d-4175-a747-13fe1d20e537" xlink:to="loc_svco_PunitiveDamagesMember_dc41e61f-99ce-4016-9b1b-55b8763f4d69" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_9f75dea0-02a0-44e9-aac2-d53ea31573d3" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_8be9203e-c7b0-43df-b141-e15653884130" xlink:to="loc_dei_LegalEntityAxis_9f75dea0-02a0-44e9-aac2-d53ea31573d3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_9f75dea0-02a0-44e9-aac2-d53ea31573d3_default" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_9f75dea0-02a0-44e9-aac2-d53ea31573d3" xlink:to="loc_dei_EntityDomain_9f75dea0-02a0-44e9-aac2-d53ea31573d3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_91d5894d-4cc5-44dc-9bd5-84fc47b604fb" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_9f75dea0-02a0-44e9-aac2-d53ea31573d3" xlink:to="loc_dei_EntityDomain_91d5894d-4cc5-44dc-9bd5-84fc47b604fb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_SilvacoGroupInc.Member_4099330a-48cd-4da9-ace6-7ca095401474" xlink:href="svco-20250331.xsd#svco_SilvacoGroupInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_91d5894d-4cc5-44dc-9bd5-84fc47b604fb" xlink:to="loc_svco_SilvacoGroupInc.Member_4099330a-48cd-4da9-ace6-7ca095401474" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_CoDefendantsMember_10ec5cfe-7207-4040-90ce-892ca5b21f0a" xlink:href="svco-20250331.xsd#svco_CoDefendantsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_91d5894d-4cc5-44dc-9bd5-84fc47b604fb" xlink:to="loc_svco_CoDefendantsMember_10ec5cfe-7207-4040-90ce-892ca5b21f0a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_StandardProductWarrantyTerm_6311111d-4d95-46eb-9c93-3ea761151636" xlink:href="svco-20250331.xsd#svco_StandardProductWarrantyTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_85209856-6efb-4202-8812-abbd4e550305" xlink:to="loc_svco_StandardProductWarrantyTerm_6311111d-4d95-46eb-9c93-3ea761151636" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyDamagesSoughtValue_a6c78bbe-9f5c-4a6a-86de-aec25c014be9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LossContingencyDamagesSoughtValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_85209856-6efb-4202-8812-abbd4e550305" xlink:to="loc_us-gaap_LossContingencyDamagesSoughtValue_a6c78bbe-9f5c-4a6a-86de-aec25c014be9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyDamagesAwardedValue_de1fd3a0-744c-4f61-9d11-97e7966c958e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LossContingencyDamagesAwardedValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_85209856-6efb-4202-8812-abbd4e550305" xlink:to="loc_us-gaap_LossContingencyDamagesAwardedValue_de1fd3a0-744c-4f61-9d11-97e7966c958e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyEstimateOfPossibleLoss_a275b63a-0616-4eb4-8548-475825f2681e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LossContingencyEstimateOfPossibleLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_85209856-6efb-4202-8812-abbd4e550305" xlink:to="loc_us-gaap_LossContingencyEstimateOfPossibleLoss_a275b63a-0616-4eb4-8548-475825f2681e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyAccrualProvision_b7a9bb65-6d40-41b9-a67a-efe7d34375d7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LossContingencyAccrualProvision"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_85209856-6efb-4202-8812-abbd4e550305" xlink:to="loc_us-gaap_LossContingencyAccrualProvision_b7a9bb65-6d40-41b9-a67a-efe7d34375d7" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_LossContingencyCollateralizedAppellateBond_3b309f26-4e01-44fb-9c8c-b682c14ce91f" xlink:href="svco-20250331.xsd#svco_LossContingencyCollateralizedAppellateBond"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_85209856-6efb-4202-8812-abbd4e550305" xlink:to="loc_svco_LossContingencyCollateralizedAppellateBond_3b309f26-4e01-44fb-9c8c-b682c14ce91f" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://silvaco.com/role/FairValueofFinancialInstrumentsDetails" xlink:type="simple" xlink:href="svco-20250331.xsd#FairValueofFinancialInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://silvaco.com/role/FairValueofFinancialInstrumentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_8fefaba3-42f3-43ab-864d-860a6fca9327" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_ce8bc8a6-28db-4b75-ad2c-ea6d1baadbc9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_8fefaba3-42f3-43ab-864d-860a6fca9327" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_ce8bc8a6-28db-4b75-ad2c-ea6d1baadbc9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_a71a1c31-0453-457c-85aa-f0fc98cd4ffb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_ce8bc8a6-28db-4b75-ad2c-ea6d1baadbc9" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_a71a1c31-0453-457c-85aa-f0fc98cd4ffb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_a71a1c31-0453-457c-85aa-f0fc98cd4ffb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_a71a1c31-0453-457c-85aa-f0fc98cd4ffb" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_a71a1c31-0453-457c-85aa-f0fc98cd4ffb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_ac67d190-8ab6-4db8-8655-a5fec3dc7442" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_a71a1c31-0453-457c-85aa-f0fc98cd4ffb" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_ac67d190-8ab6-4db8-8655-a5fec3dc7442" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_feb0d7c1-40de-4e3b-9bf7-986766b48b8d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_ac67d190-8ab6-4db8-8655-a5fec3dc7442" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_feb0d7c1-40de-4e3b-9bf7-986766b48b8d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_284bdaf2-924a-497d-b23d-86195b2c3d14" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_ac67d190-8ab6-4db8-8655-a5fec3dc7442" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_284bdaf2-924a-497d-b23d-86195b2c3d14" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_7e189bbf-6c1f-4f0a-b330-29857fc7f707" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_ac67d190-8ab6-4db8-8655-a5fec3dc7442" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_7e189bbf-6c1f-4f0a-b330-29857fc7f707" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAxis_d44047c9-d79b-42b4-ba9e-33808d668290" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashAndCashEquivalentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_ce8bc8a6-28db-4b75-ad2c-ea6d1baadbc9" xlink:to="loc_us-gaap_CashAndCashEquivalentsAxis_d44047c9-d79b-42b4-ba9e-33808d668290" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_d44047c9-d79b-42b4-ba9e-33808d668290_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CashAndCashEquivalentsAxis_d44047c9-d79b-42b4-ba9e-33808d668290" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_d44047c9-d79b-42b4-ba9e-33808d668290_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_8894a897-d181-4703-8af8-0079c12eb59f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CashAndCashEquivalentsAxis_d44047c9-d79b-42b4-ba9e-33808d668290" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_8894a897-d181-4703-8af8-0079c12eb59f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MoneyMarketFundsMember_3455bd10-c25b-459a-929a-36ae48c0aa22" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MoneyMarketFundsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_8894a897-d181-4703-8af8-0079c12eb59f" xlink:to="loc_us-gaap_MoneyMarketFundsMember_3455bd10-c25b-459a-929a-36ae48c0aa22" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_786ab7ce-bce5-4e9f-ab47-6e9ee0e26172" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_ce8bc8a6-28db-4b75-ad2c-ea6d1baadbc9" xlink:to="loc_us-gaap_FinancialInstrumentAxis_786ab7ce-bce5-4e9f-ab47-6e9ee0e26172" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_786ab7ce-bce5-4e9f-ab47-6e9ee0e26172_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_786ab7ce-bce5-4e9f-ab47-6e9ee0e26172" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_786ab7ce-bce5-4e9f-ab47-6e9ee0e26172_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_681fc92b-cc33-4e7f-9263-f00377dd2217" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_786ab7ce-bce5-4e9f-ab47-6e9ee0e26172" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_681fc92b-cc33-4e7f-9263-f00377dd2217" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasurySecuritiesMember_12192865-6edd-43df-a69b-f5e1603f8410" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_USTreasurySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_681fc92b-cc33-4e7f-9263-f00377dd2217" xlink:to="loc_us-gaap_USTreasurySecuritiesMember_12192865-6edd-43df-a69b-f5e1603f8410" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_9b1dc52d-ab30-43d4-9b0b-68cefb2a7a38" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_USGovernmentAgenciesDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_681fc92b-cc33-4e7f-9263-f00377dd2217" xlink:to="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_9b1dc52d-ab30-43d4-9b0b-68cefb2a7a38" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_eb79f648-da37-4b55-b0a5-1a3e989296be" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_8fefaba3-42f3-43ab-864d-860a6fca9327" xlink:to="loc_us-gaap_AssetsAbstract_eb79f648-da37-4b55-b0a5-1a3e989296be" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_a0de369e-ac84-4538-84c7-8a785b716231" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_eb79f648-da37-4b55-b0a5-1a3e989296be" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_a0de369e-ac84-4538-84c7-8a785b716231" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_741e66b4-f105-48f1-ba0d-050ccda9047d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_eb79f648-da37-4b55-b0a5-1a3e989296be" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_741e66b4-f105-48f1-ba0d-050ccda9047d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_d5b39541-2984-4272-9dd4-0ccc9e056602" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_eb79f648-da37-4b55-b0a5-1a3e989296be" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_d5b39541-2984-4272-9dd4-0ccc9e056602" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAbstract_7a719ff6-4dbf-421f-a4c9-5fdd1eb98119" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_8fefaba3-42f3-43ab-864d-860a6fca9327" xlink:to="loc_us-gaap_LiabilitiesAbstract_7a719ff6-4dbf-421f-a4c9-5fdd1eb98119" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationLiability_b66ffad9-c943-4d8f-b85e-a10b9d9a529b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationContingentConsiderationLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_7a719ff6-4dbf-421f-a4c9-5fdd1eb98119" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationLiability_b66ffad9-c943-4d8f-b85e-a10b9d9a529b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosure_6df85fab-2454-4051-b826-eb8d09a24b43" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_7a719ff6-4dbf-421f-a4c9-5fdd1eb98119" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosure_6df85fab-2454-4051-b826-eb8d09a24b43" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://silvaco.com/role/SubsequentEventsDetails" xlink:type="simple" xlink:href="svco-20250331.xsd#SubsequentEventsDetails"/>
  <link:definitionLink xlink:role="http://silvaco.com/role/SubsequentEventsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventLineItems_6a121595-a7e8-4be8-9d48-89e250ff5536" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTable_c81c9ee2-d4be-43fe-aed5-0613773bf19e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SubsequentEventLineItems_6a121595-a7e8-4be8-9d48-89e250ff5536" xlink:to="loc_us-gaap_SubsequentEventTable_c81c9ee2-d4be-43fe-aed5-0613773bf19e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_32d6fb29-f032-4c30-96c3-5c33e7dc6298" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_c81c9ee2-d4be-43fe-aed5-0613773bf19e" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_32d6fb29-f032-4c30-96c3-5c33e7dc6298" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_32d6fb29-f032-4c30-96c3-5c33e7dc6298_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_32d6fb29-f032-4c30-96c3-5c33e7dc6298" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_32d6fb29-f032-4c30-96c3-5c33e7dc6298_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_14bb311f-e800-47af-a45e-3c2505b7dea4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_32d6fb29-f032-4c30-96c3-5c33e7dc6298" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_14bb311f-e800-47af-a45e-3c2505b7dea4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_svco_TechXCorporationMember_f30a7c6d-4c32-4049-a64b-de19a19820f1" xlink:href="svco-20250331.xsd#svco_TechXCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_14bb311f-e800-47af-a45e-3c2505b7dea4" xlink:to="loc_svco_TechXCorporationMember_f30a7c6d-4c32-4049-a64b-de19a19820f1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_13b3a030-af0b-4073-9fc7-45ccf193880c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_c81c9ee2-d4be-43fe-aed5-0613773bf19e" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_13b3a030-af0b-4073-9fc7-45ccf193880c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_13b3a030-af0b-4073-9fc7-45ccf193880c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_13b3a030-af0b-4073-9fc7-45ccf193880c" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_13b3a030-af0b-4073-9fc7-45ccf193880c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_1dec703e-1614-45a6-8194-62c72d304c7f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_13b3a030-af0b-4073-9fc7-45ccf193880c" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_1dec703e-1614-45a6-8194-62c72d304c7f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_93b21a73-ac74-414f-91c6-23709b71a487" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_1dec703e-1614-45a6-8194-62c72d304c7f" xlink:to="loc_us-gaap_SubsequentEventMember_93b21a73-ac74-414f-91c6-23709b71a487" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationPriceOfAcquisitionExpected_374c90db-3211-48cb-bdc6-d0d0f380a14a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationPriceOfAcquisitionExpected"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_6a121595-a7e8-4be8-9d48-89e250ff5536" xlink:to="loc_us-gaap_BusinessCombinationPriceOfAcquisitionExpected_374c90db-3211-48cb-bdc6-d0d0f380a14a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationLiability_182a9774-e488-4f33-91e2-f4674c0b5212" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationContingentConsiderationLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_6a121595-a7e8-4be8-9d48-89e250ff5536" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationLiability_182a9774-e488-4f33-91e2-f4674c0b5212" xlink:type="arc" order="1"/>
  </link:definitionLink>
</link:linkbase>
