Dictionary
2 ENTRIES FOUND:

biennial

adjective bi·en·ni·al \(ˌ)bī-ˈe-nē-əl\

: happening every two years

of a plant : living for only two years or seasons : having a life cycle that is two years or seasons long

Full Definition of BIENNIAL

1
:  occurring every two years
2
:  continuing or lasting for two years; specifically :  growing vegetatively during the first year and fruiting and dying during the second
See Usage Discussion at bi-
biennial noun
bi·en·ni·al·ly \-ə-lē\ adverb

Examples of BIENNIAL

  1. The governor explained the biennial budget proposal.

First Known Use of BIENNIAL

1562

Other Number-Related Terms

jubilee, myriad, quarantine, score, twain

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