[noun] 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
[adjective] occurring every second year; "they met at biennial conventions" Synonyms:biyearly
[adjective] having a life cycle lasting two seasons; "a biennial life cycle"; "parsnips and carrots are biennial plants often grown as annuals" Synonyms:two-year
