biannual

[bahy-an-yoo-uhl]
adjective
1.
occurring twice a year; semiannual.
2.
occurring every two years; biennial.

Origin:
1875–80; bi-1 + annual

biannually, adverb

biannual, biennial, semiannual (see usage note at bi-).


See bi-1.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
biannual (baɪˈænjʊəl)
 
adj
Compare biennial occurring twice a year
 
bi'annually
 
adv

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

biannual
also bi-annual; "every six months," 1877, from bi- + annual.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
There is no record of his having gone through annual or biannual department evaluations.
In addition to teaching choral literature, conducting and arranging, he led biannual choral concerts.
In this biannual arena in which a chosen few compete, a couturier has free reign to create whatever vision he has in mind.
The biannual event celebrates the great strides being made by alt-fuels and the vehicles that use them.
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