triennium

[ trahy-en-ee-uh m ]
/ traɪˈɛn i əm /

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

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

Words nearby triennium

tried and true, tried-and-true, triella, triene, triennial, triennium, triens, trient, trier, trierarch, trierarchy

Example sentences from the Web for triennium

British Dictionary definitions for triennium

triennium
/ (traɪˈɛnɪəm) /

noun plural -niums or -nia (-nɪə)

a period or cycle of three years

Word Origin for triennium

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