triennial Hear it!

triennial definition

tri·en·nial (trī en′ē əl)

adjective

  1. happening every three years
  2. lasting three years

Etymology: < L triennium, three years < tri-, tri- + annus, year: see annual

noun

a triennial event or occurrence

Related Forms:

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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