sesquicentennial

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noun ses·qui·cen·ten·ni·al \-sen-ˈte-nē-əl\

Definition of sesquicentennial

  1. :  a 150th anniversary or its celebration

sesquicentennial

adjective

1880

First Known Use of sesquicentennial

1880

Other Calendar Terms


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rude, impolite, or socially unacceptable

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