biennium


bi·en·ni·um

noun \bī-ˈe-nē-əm\
plural bi·en·ni·ums or -nia \-nē-ə\

Definition of BIENNIUM

:  a period of two years

Origin of BIENNIUM

Latin, from bi- + annus year — more at annual
First Known Use: 1899

Rhymes with BIENNIUM

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