Biennial Definition
bī-ĕnē-əl
adjective
Lasting or living for two years.
American Heritage
Happening every second year.
American Heritage
Lasting or living two years.
Webster's New World
Having a life cycle that normally takes two growing seasons to complete.
American Heritage
Completing a life cycle normally in two growing seasons.
American Heritage Science
Synonyms:
- biyearly
- two-year
noun
An event that occurs every two years.
American Heritage
A biennial event or occurrence.
Webster's New World
A plant that normally requires two seasons to complete its life cycle, growing usually as a rosette in the first season and producing flowers and fruits and then dying in the second season.
American Heritage
A plant that lasts two years, usually producing flowers and seed the second year.
Webster's New World
A perennial plant, such as the English daisy, cultivated as a biennial.
American Heritage
Other Word Forms of Biennial
Noun
Singular:
biennialPlural:
biennials
Biennial Is Also Mentioned In
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