biennial
/baɪˈɛn.i.əl/ adjective, noun
Forms biennials
- adjective Happening every two years.
- adjective Lasting for two years.
- noun A plant that requires two years to complete its life-cycle, germinating and growing in its first year, then producing its flowers and fruit in its second year, after which it usually dies.
- noun An event that happens every two years.
Synonyms
Antonyms
Etymology
Borrowed from Latin bienni(um) (“two-year period”) [from bis, bi- (“twice”) + annus (“year”)] + -al (suffix forming adjectives). By surface analysis, bi- + -ennial.
Webster’s 1913
- adjective Happening, or taking place, once in two years; as, a biennial election.
- adjective Continuing for two years, and then perishing, as plants which form roots and leaves the first year, and produce fruit the second.
- noun Something which takes place or appears once in two years; esp. a biennial examination.
- noun A plant which exists or lasts for two years.
Etymology [L. biennalis and biennis, fr. biennium a space of two years; bis twice + annus year. Cf. Annual.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “biennial”, CC BY-SA 4.0. Details