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Definition of biannually

biannually

/baɪˈæn.ju.ə.li/
bi · an · nu · al · ly
Adjective:biannual
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biannually Lexical Profile

biannually Game Scores & Validity

• adverb

1

Twice a year; every six months.

Example

"The dental association recommends having your teeth professionally cleaned biannually."

2

Every two years; once every two years.

Example

"The international trade summit is held biannually in rotating host cities."

Synonyms
View all synonyms for biannually

Word Nuance & Usage

"Biannually" (twice a year) is frequently confused with "biennially" (every two years). Because "biannually" is sometimes used for both meanings, writers often prefer "semiannually" for twice a year or spell out the exact timeframe to avoid ambiguity.

• Rhymes for biannually

• Nearby Words

bhutan
bi
biannual
biannually
bias
biased
biasedly

Word Origin & Etymology

Formed in the late 19th century from the prefix "bi-" (meaning "two" or "twice") and "annually", from Latin "annus" (meaning "year").

Cite this Entry

Wordmom. (2026). Definition of Biannually. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/biannually
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