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semicentenary

[ sem-ee-sen-ten-uh-ree, -sen-tn-er-ee, sem-ahy-or, especially British, -sen-tee-nuh-ree ]

adjective

, plural sem·i·cen·ten·ar·ies.


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Word History and Origins

Origin of semicentenary1

First recorded in 1865–70; semi- + centenary

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semibrevesemicentennial