biannual

[ bahy-an-yoo-uh l ]
/ baɪˈæn yu əl /

adjective

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

Origin of biannual

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

Related forms

bi·an·nu·al·ly, adverb

Can be confused

biannual 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 Forms

biannually, 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