triennium

triennium [trahy-en-ee-uh m] ExamplesWord Origin 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 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 Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019 Examples from the Web for triennium Historical Examples of triennium

At the completion of his triennium he was chosen president of the Recollect hospitium in Mexico.

The Philippine Islands, 1493-1898 – Volume 41 of 55, 1691-1700

Various

During the triennium of our father Méntrida, he was visitor and prior of Pasig.

The Philippine Islands, 1493-1898, Volume XXIV, 1630-34

Various

British Dictionary definitions for triennium triennium noun plural -niums or -nia (-nɪə)

1. a period or cycle of three years

Word Origin for triennium 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