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quinquagenary

American  
[kwin-kwah-juh-ner-ee, kwing-] / kwɪnˈkwɑ dʒəˌnɛr i, kwɪŋ- /

noun

plural

quinquagenaries

  1. a 50th anniversary.

Etymology

Origin of quinquagenary

1580–90; < Latin quīnquāgēnārius containing fifty, equivalent to quīnquāgēn ( ī ) fifty each + -ārius -ary

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.