triennial

play
adjective tri·en·ni·al \(ˌ)trī-ˈe-nē-əl\

Definition of triennial

  1. 1 :  occurring or being done every three years the triennial convention

  2. 2 :  consisting of or lasting for three years a triennial contract

triennial

noun

triennially

play \-nē-ə-lē\ adverb

1562

First Known Use of triennial

1562



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