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Biennial Definition

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Other Biennial Definition

[n] 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
[adj] (botany) having a life cycle lasting two seasons; "a biennial life cycle"; "parsnips and carrots are biennial plants often grown as annuals"
[adj] occurring every second year; "they met at biennial conventions"


biyearly, two-year

See Also...

flora, plant, plant life

Misc. Definitions

\Bi*en"ni*al\, a. [L. biennalis and biennis, fr. biennium a space of two years; bis twice + annus year. Cf. {Annual}.]
1. Happening, or taking place, once in two years; as, a biennial election.
2. (Bot.) Continuing for two years, and then perishing, as plants which form roots and leaves the first year, and produce fruit the second.
\Bi*en"ni*al\, n.
1. Something which takes place or appears once in two years; esp. a biennial examination.
2. (Bot.) A plant which exists or lasts for two years.

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