n.
Pronunciation: ( ˌ )b ī - ' e-n ē - ə l
Function: adjective
Date: 1562
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
usage see BI-
– biennial noun
– bi · en · ni · al · ly \ - ə -l ē \ adverb