biannual

[ bahy-an-yoo-uh l ]
/ baɪˈæn yu əl /

adjective

occurring twice a year; semiannual.
occurring every two years; biennial.

Nearby words

  1. bialy,
  2. bianca,
  3. bianchi's nodule,
  4. bianco,
  5. biangular,
  6. biannulate,
  7. biarritz,
  8. biarticular,
  9. biarticulate,
  10. bias

Origin of biannual

First recorded in 1875–80; bi-1 + annual

Related formsbi·an·nu·al·ly, adverb

Can be confusedbiannual biennial semiannual (see usage note at bi-1)

Usage note

See bi-1.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for bi-annual


British Dictionary definitions for bi-annual

biannual

/ (baɪˈænjʊəl) /

adjective

occurring twice a yearCompare biennial
Derived Formsbiannually, adverb

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for bi-annual

biannual

adj.

also bi-annual; "occurring every six months, twice a year," 1837, from bi- + annual. Related: Biannually; bi-annually.

Online Etymology Dictionary, © 2010 Douglas Harper