biennium Hear it!

biennium definition

bi·en·ni·um (bī en′ē əm)

noun pl. bienniums -·ni·ums or biennia -·nia (-ə)

a period of two years

Etymology: L, see biennial

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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