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biennial

adjective

bi·​en·​ni·​al (ˌ)bī-ˈe-nē-əl How to pronounce biennial (audio)
1
: occurring every two years
a biennial celebration
2
: continuing or lasting for two years
specifically, of a plant : growing vegetatively during the first year and fruiting and dying during the second
Biennial herbs flower in their second year.
biennial noun
biennially
(ˌ)bī-ˈe-nē-ə-lē How to pronounce biennial (audio)
adverb
What do bimonthly and biweekly mean?: Usage Guide

Many people are puzzled about bimonthly and biweekly, which are often ambiguous because they are formed from two different senses of bi-: "occurring every two" and "occurring two times." This ambiguity has been in existence for nearly a century and a half and cannot be eliminated by the dictionary. The chief difficulty is that many users of these words assume that others know exactly what they mean, and they do not bother to make their context clear. So if you need bimonthly or biweekly, you should leave some clues in your context to the sense of bi- you mean. And if you need the meaning "twice a," you can substitute semi- for bi-. Biannual and biennial are usually differentiated.

Did you know?

Biennial conventions, celebrations, competitions, and sports events come every two years. Biennials are plants that live two years, bearing flowers and fruit only in the second year. (Carrots and sugar beets are two examples; since we're only interested in their roots, we don't wait another year to see their flower and fruit.) In contrast, semiannual means "twice a year". But no one can agree whether biweekly means "twice a week" or "every two weeks", and whether bimonthly means "twice a month" or "every two months". Maybe we should stop using both of them until we can decide.

Example Sentences

The governor explained the biennial budget proposal.
Recent Examples on the Web Informal agreements governing how council would approve spending are similar to how the county creates its biennial budget, said Miller, who chairs the county’s Finance and Budget Committee. Lucas Daprile, cleveland, 11 Sep. 2022 The governor originally proposed creating the Caregiver Tax Credit in his 2021-23 biennial budget and proposed it as part of his plan to use the state’s surplus earlier this year, but both moves were rejected by Republicans in the Legislature. Corrinne Hess, Journal Sentinel, 23 Aug. 2022 The biennial promises to be a cross-disciplinary record of that time. Los Angeles Times, 31 Aug. 2022 The survey funding comes partially from a biennial state appropriation as well as federal and state grant programs. Karl Schneider, The Indianapolis Star, 26 Aug. 2022 The convention, which will take place for the first time in 2023, was originally conceived of as a biennial compliment to the show in Switzerland. Bryan Hood, Robb Report, 19 Aug. 2022 Green — who has kept his name — announced his transition in a video yesterday, Aug. 16, tied to the Bingham Cup, a biennial gay and inclusive rugby tournament. Jon Blistein, Rolling Stone, 17 Aug. 2022 Republican legislative leaders said lawmakers will consider increasing teacher pay during the 2023 regular session, starting Jan. 9, after the House and Senate education committees complete their biennial educational adequacy review this fall. Michael R. Wickline, Arkansas Online, 10 Aug. 2022 The fall following an election ALL IN hosts our biennial ALL IN Awards Ceremony to recognize campuses going above and beyond to empower the next generation of voters. Raye Maguire, Forbes, 9 Aug. 2022 See More

Word History

First Known Use

1562, in the meaning defined at sense 1

Time Traveler
The first known use of biennial was in 1562

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