<?xml version="1.0" encoding="US-ASCII" standalone="no"?>
    <!-- Field: Doc-Info; Name: Generator; Value: GoFiler Complete; Version: 6.5b -->
    <!-- Field: Doc-Info; Name: VendorURI; Value: https://www.novaworks.com -->
    <!-- Field: Doc-Info; Name: Status; Value: 0x00000000 -->
<link:linkbase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xbrli="http://www.xbrl.org/2003/instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#HoldingsByIndustrySector" roleURI="http://xbrl.sec.gov/oef/role/HoldingsByIndustrySector" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#HoldingsByGeographicRegion" roleURI="http://xbrl.sec.gov/oef/role/HoldingsByGeographicRegion" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#HoldingsByCreditQuality" roleURI="http://xbrl.sec.gov/oef/role/HoldingsByCreditQuality" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#HoldingsByMaturity" roleURI="http://xbrl.sec.gov/oef/role/HoldingsByMaturity" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#HoldingsByAssetCategory" roleURI="http://xbrl.sec.gov/oef/role/HoldingsByAssetCategory" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#HoldingsByOtherCategory" roleURI="http://xbrl.sec.gov/oef/role/HoldingsByOtherCategory" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#HoldingsByOtherCategory2" roleURI="http://xbrl.sec.gov/oef/role/HoldingsByOtherCategory2" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#LargestHoldings" roleURI="http://xbrl.sec.gov/oef/role/LargestHoldings" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ProspectusOnly" roleURI="http://xbrl.sec.gov/rr/role/ProspectusOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#RiskOnly" roleURI="http://xbrl.sec.gov/rr/role/RiskOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#CoregistrantOnly" roleURI="http://xbrl.sec.gov/oef/role/CoregistrantOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#SeriesOnly" roleURI="http://xbrl.sec.gov/oef/role/SeriesOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ClassOnly" roleURI="http://xbrl.sec.gov/oef/role/ClassOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#PerformanceMeasureOnly" roleURI="http://xbrl.sec.gov/rr/role/PerformanceMeasureOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#HoldingAssetCategoryOnly" roleURI="http://xbrl.sec.gov/oef/role/HoldingAssetCategoryOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#BroadBasedIndexOnly" roleURI="http://xbrl.sec.gov/oef/role/BroadBasedIndexOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#AdditionalIndexOnly" roleURI="http://xbrl.sec.gov/oef/role/AdditionalIndexOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#IndustrySectorOnly" roleURI="http://xbrl.sec.gov/oef/role/IndustrySectorOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#GeographicRegionOnly" roleURI="http://xbrl.sec.gov/oef/role/GeographicRegionOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#CreditQualityOnly" roleURI="http://xbrl.sec.gov/oef/role/CreditQualityOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#MaturityOnly" roleURI="http://xbrl.sec.gov/oef/role/MaturityOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#Other1CategoryOnly" roleURI="http://xbrl.sec.gov/oef/role/Other1CategoryOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#Other2CategoryOnly" roleURI="http://xbrl.sec.gov/oef/role/Other2CategoryOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#LargestHoldingOnly" roleURI="http://xbrl.sec.gov/oef/role/LargestHoldingOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#SalesLoadOnly" roleURI="http://xbrl.sec.gov/oef/role/SalesLoadOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#HoldingMeasureOnly" roleURI="http://xbrl.sec.gov/oef/role/HoldingMeasureOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ValueMeasureOnly" roleURI="http://xbrl.sec.gov/oef/role/ValueMeasureOnly" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" arcroleURI="http://xbrl.org/int/dim/arcrole/all" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#notAll" arcroleURI="http://xbrl.org/int/dim/arcrole/notAll" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/rr/role/ProspectusOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/rr/role/RiskOnly">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_AllRisksMember" xlink:label="loc_oefAllRisksMember" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_ReferenceAssetRisksMember" xlink:label="loc_defianceReferenceAssetRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceReferenceAssetRisksMember" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_IndirectInvestmentInReferenceAssetRiskMember" xlink:label="loc_defianceIndirectInvestmentInReferenceAssetRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIndirectInvestmentInReferenceAssetRiskMember" xlink:type="arc" order="10" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_ReferenceAssetPerformanceRiskMember" xlink:label="loc_defianceReferenceAssetPerformanceRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceReferenceAssetPerformanceRiskMember" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_BrazilInvestingRiskMember" xlink:label="loc_defianceBrazilInvestingRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceBrazilInvestingRiskMember" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_EmergingMarketsSecuritiesRiskMember" xlink:label="loc_defianceEmergingMarketsSecuritiesRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceEmergingMarketsSecuritiesRiskMember" xlink:type="arc" order="40" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_MarketCapitalizationRiskMember" xlink:label="loc_defianceMarketCapitalizationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceMarketCapitalizationRiskMember" xlink:type="arc" order="50" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_ForeignSecuritiesRiskMember" xlink:label="loc_defianceForeignSecuritiesRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceForeignSecuritiesRiskMember" xlink:type="arc" order="60" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_FinancialServicesIndustryRiskMember" xlink:label="loc_defianceFinancialServicesIndustryRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceFinancialServicesIndustryRiskMember" xlink:type="arc" order="70" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_SingleIssuerRiskMember" xlink:label="loc_defianceSingleIssuerRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceSingleIssuerRiskMember" xlink:type="arc" order="80" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_CompoundingAndMarketVolatilityRiskMember" xlink:label="loc_defianceCompoundingAndMarketVolatilityRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceCompoundingAndMarketVolatilityRiskMember" xlink:type="arc" order="90" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_DailyCorrelationTrackingRiskMember" xlink:label="loc_defianceDailyCorrelationTrackingRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceDailyCorrelationTrackingRiskMember" xlink:type="arc" order="100" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_LeverageRiskMember" xlink:label="loc_defianceLeverageRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceLeverageRiskMember" xlink:type="arc" order="110" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_DerivativesRiskMember" xlink:label="loc_defianceDerivativesRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceDerivativesRiskMember" xlink:type="arc" order="120" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_SwapAgreementsMember" xlink:label="loc_defianceSwapAgreementsMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceSwapAgreementsMember" xlink:type="arc" order="130" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_OptionsContractsMember" xlink:label="loc_defianceOptionsContractsMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceOptionsContractsMember" xlink:type="arc" order="140" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_CounterpartyRiskMember" xlink:label="loc_defianceCounterpartyRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceCounterpartyRiskMember" xlink:type="arc" order="150" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_IntradayInvestmentRiskMember" xlink:label="loc_defianceIntradayInvestmentRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIntradayInvestmentRiskMember" xlink:type="arc" order="160" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_FixedIncomeSecuritiesRiskMember" xlink:label="loc_defianceFixedIncomeSecuritiesRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceFixedIncomeSecuritiesRiskMember" xlink:type="arc" order="170" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_RebalancingRiskMember" xlink:label="loc_defianceRebalancingRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceRebalancingRiskMember" xlink:type="arc" order="180" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_EconomicAndMarketRiskMember" xlink:label="loc_defianceEconomicAndMarketRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceEconomicAndMarketRiskMember" xlink:type="arc" order="190" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_EtfRisksMember" xlink:label="loc_defianceEtfRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceEtfRisksMember" xlink:type="arc" order="200" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_AuthorizedParticipantsMarketMakersAndLiquidityProvidersConcentrationRiskMember" xlink:label="loc_defianceAuthorizedParticipantsMarketMakersAndLiquidityProvidersConcentrationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceAuthorizedParticipantsMarketMakersAndLiquidityProvidersConcentrationRiskMember" xlink:type="arc" order="210" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_CashRedemptionRiskMember" xlink:label="loc_defianceCashRedemptionRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceCashRedemptionRiskMember" xlink:type="arc" order="220" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_CostsOfBuyingOrSellingSharesMember" xlink:label="loc_defianceCostsOfBuyingOrSellingSharesMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceCostsOfBuyingOrSellingSharesMember" xlink:type="arc" order="230" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_SharesMayTradeAtPricesOtherThanNavMember" xlink:label="loc_defianceSharesMayTradeAtPricesOtherThanNavMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceSharesMayTradeAtPricesOtherThanNavMember" xlink:type="arc" order="240" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_TradingMember" xlink:label="loc_defianceTradingMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceTradingMember" xlink:type="arc" order="250" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_LiquidityRiskMember" xlink:label="loc_defianceLiquidityRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceLiquidityRiskMember" xlink:type="arc" order="260" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_HighPortfolioTurnoverRiskMember" xlink:label="loc_defianceHighPortfolioTurnoverRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceHighPortfolioTurnoverRiskMember" xlink:type="arc" order="270" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_TrackingErrorRiskMember" xlink:label="loc_defianceTrackingErrorRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceTrackingErrorRiskMember" xlink:type="arc" order="280" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_LiquidityRisk1Member" xlink:label="loc_defianceLiquidityRisk1Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceLiquidityRisk1Member" xlink:type="arc" order="290" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_MoneyMarketInstrumentRiskMember" xlink:label="loc_defianceMoneyMarketInstrumentRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceMoneyMarketInstrumentRiskMember" xlink:type="arc" order="300" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_NewFundRiskMember" xlink:label="loc_defianceNewFundRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceNewFundRiskMember" xlink:type="arc" order="310" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_TradingHaltRiskMember" xlink:label="loc_defianceTradingHaltRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceTradingHaltRiskMember" xlink:type="arc" order="320" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_OperationalRiskMember" xlink:label="loc_defianceOperationalRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceOperationalRiskMember" xlink:type="arc" order="330" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_USGovernmentandUSAgencyObligationsRiskMember" xlink:label="loc_defianceUSGovernmentandUSAgencyObligationsRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceUSGovernmentandUSAgencyObligationsRiskMember" xlink:type="arc" order="340" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_TaxRiskMember" xlink:label="loc_defianceTaxRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceTaxRiskMember" xlink:type="arc" order="350" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_IsraelInvestingRiskMember" xlink:label="loc_defianceIsraelInvestingRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIsraelInvestingRiskMember" xlink:type="arc" order="360" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_TechnologyIndustryRiskMember" xlink:label="loc_defianceTechnologyIndustryRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceTechnologyIndustryRiskMember" xlink:type="arc" order="370" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_HealthCareIndustryRiskMember" xlink:label="loc_defianceHealthCareIndustryRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceHealthCareIndustryRiskMember" xlink:type="arc" order="380" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_SouthKoreaInvestingRiskMember" xlink:label="loc_defianceSouthKoreaInvestingRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceSouthKoreaInvestingRiskMember" xlink:type="arc" order="390" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_IndustrialsRiskMember" xlink:label="loc_defianceIndustrialsRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIndustrialsRiskMember" xlink:type="arc" order="400" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_TaiwanInvestingRiskMember" xlink:label="loc_defianceTaiwanInvestingRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceTaiwanInvestingRiskMember" xlink:type="arc" order="410" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_SemiconductorsandSemiconductorEquipmentIndustryRiskMember" xlink:label="loc_defianceSemiconductorsandSemiconductorEquipmentIndustryRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceSemiconductorsandSemiconductorEquipmentIndustryRiskMember" xlink:type="arc" order="420" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/CoregistrantOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/SeriesOnly">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain" xlink:label="loc_deiEntityDomain" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_S000106223Member" xlink:label="loc_defianceS000106223Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000106223Member" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_S000106224Member" xlink:label="loc_defianceS000106224Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000106224Member" xlink:type="arc" order="10" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_S000106225Member" xlink:label="loc_defianceS000106225Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000106225Member" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_S000106226Member" xlink:label="loc_defianceS000106226Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000106226Member" xlink:type="arc" order="30" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/ClassOnly">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_ShareClassDomain" xlink:label="loc_oefShareClassDomain" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_C000277060Member" xlink:label="loc_defianceC000277060Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000277060Member" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_C000277061Member" xlink:label="loc_defianceC000277061Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000277061Member" xlink:type="arc" order="10" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_C000277062Member" xlink:label="loc_defianceC000277062Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000277062Member" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260706.xsd#defiance_C000277063Member" xlink:label="loc_defianceC000277063Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000277063Member" xlink:type="arc" order="30" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/rr/role/PerformanceMeasureOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/HoldingAssetCategoryOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/BroadBasedIndexOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/AdditionalIndexOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/IndustrySectorOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/GeographicRegionOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/CreditQualityOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/MaturityOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/Other1CategoryOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/Other2CategoryOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/LargestHoldingOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/SalesLoadOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/HoldingMeasureOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/ValueMeasureOnly" />
</link:linkbase>
