biennial

名词 n. 形容词 adj.
中文释义

英文释义

名词 n.
  1. 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.
  2. An event that happens every two years.
    — The famous Biennial was won by Earl of Dartrey, a light, peacocky horse, who was, perhaps, better than he looked.
形容词 adj.
  1. Happening every two years. not-comparable
    — This is a marked difference from the task force’s previous guidance, which was to start biennial mammograms by age 50.
  2. Lasting for two years. not-comparable

词形变化

biennials plural

词汇关系

近义词
biennary biannual
衍生词
bienniality quasi-biennial oscillation
相关词
biennium biennially biannual semiannual annual triennial quadrennial quinquennial sexennial septennial octennial novennial decennial vicennial centennial bicentennial quincentennial millennial perennial

词源

词源 1
Borrowed from Latin bienni(um) (“two-year period”) [from bis, bi- (“twice”) + annus (“year”)] + -al (suffix forming adjectives). By surface analysis, bi- + -ennial.
词源 2
Borrowed from Latin bienni(um) (“two-year period”) [from bis, bi- (“twice”) + annus (“year”)] + -al (suffix forming adjectives). By surface analysis, bi- + -ennial.
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