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decennary

[ dih-sen-uh-ree ]
/ dɪˈsɛn ə ri /
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noun, plural de·cen·na·ries.

a decennium.

adjective

pertaining to a period of ten years; decennial.

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Origin of decennary

1815–25; <Latin decenn(is) of ten years (dec(em) ten + -ennis, combining form of annus a year) + -ary
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
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