(noun, adjective)


1. having a life cycle lasting two seasons

- a biennial life cycle

- parsnips and carrots are biennial plants often grown as annuals

2. occurring every second year

- they met at biennial conventions

Similar word(s): periodic, periodical, biyearly


1. (botany) 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

Definition categories: plant, flora