quadrennium

[ kwo-dren-ee-uh m ]
/ kwɒˈdrɛn i əm /

noun, plural quad·ren·ni·ums, quad·ren·ni·a [kwo-dren-ee-uh] /kwɒˈdrɛn i ə/.

a period of four years.

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Origin of quadrennium

1815–25; < New Latin, alteration of Latin quadriennium, equivalent to quadri- quadri- + -enn-, combining form of annus year (cf. annual) + -ium -ium
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for quadrennium

quadrennium
/ (kwɒˈdrɛnɪəm) /

noun plural -niums or -nia (-nɪə)

a period of four years

Word Origin for quadrennium

C17: from Latin quadriennium, from quadri- + annus year
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012