triennium

[ trahy-en-ee-uhm ]

noun,plural tri·en·ni·ums, tri·en·ni·a [trahy-en-ee-uh]. /traɪˈɛn i ə/.
  1. a period of three years.

Origin of triennium

1
1840–50; <Latin: period of three years, equivalent to trienn(is) pertaining to three years (tri-tri- + -enn-, combining form of annus year + -is adj. suffix) + -ium-ium

Words Nearby triennium

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use triennium in a sentence

British Dictionary definitions for triennium

triennium

/ (traɪˈɛnɪəm) /


nounplural -niums or -nia (-nɪə)
  1. a period or cycle of three years

Origin of triennium

1
C19: from Latin, from tri- + annus a 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