Adjective biennial has 2 senses
  1. biennial, biyearly - occurring every second year; "they met at biennial conventions"
  2. biennial, two-year - having a life cycle lasting two seasons; "a biennial life cycle"; "parsnips and carrots are biennial plants often grown as annuals"
    Antonyms: perennial, annual, one-year
,Noun biennial has 1 sense
  1. biennial - a plant having a life cycle that normally takes two seasons from germination to death to complete; flowering biennials usually bloom and fruit in the second season
    --1 is a kind of
    plant, flora, plant life
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