occurring every two weeks.
occurring twice a week; semiweekly.

noun, plural bi·week·lies.

a periodical issued every other week.


every two weeks.
twice a week.

Origin of biweekly

First recorded in 1880–85; bi-1 + weekly
Can be confusedbimonthly biweekly semimonthly (see usage note at bi-1)biweekly semiweekly (see usage note at bi-1)

Usage note

See bi-1. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for biweekly


Examples from the Web for biweekly

Contemporary Examples of biweekly

Historical Examples of biweekly

British Dictionary definitions for biweekly


adjective, adverb

every two weeks
(often avoided because of confusion with sense 1) twice a week; semiweeklySee bi- 1

noun plural -lies

a periodical published every two weeks
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 biweekly

also bi-weekly, 1865, from bi- + weekly. The sense "twice a week" is the first attested, but that of "every two weeks" is equally implied.

Online Etymology Dictionary, © 2010 Douglas Harper