biennium

play
noun bi·en·ni·um \bī-ˈe-nē-əm\

Definition of biennium

plural

bienniums

or

biennia

play \-nē-ə\
  1. :  a period of two years

Recent Examples of biennium from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'biennium'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of biennium

Latin, from bi- + annus year — more at annual


First Known Use: 1699

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the point at which something begins

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