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tercentenary

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noun ter·cen·te·na·ry \ˌtər-(ˌ)sen-ˈte-nə-rē, (ˌ)tər-ˈsen-tə-ˌner-ē\

Definition of tercentenary

plural tercentenaries

  1. :  a 300th anniversary or its celebration

tercentenary adjective



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