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biennially

American  
[bahy-en-ee-uh-lee] / baɪˈɛn i ə li /

adverb

  1. every two years.

    The general election shall be held biennially on the Tuesday following the first Monday of November in each even-numbered year.

  2. Botany. two years after starting to grow.

    The fruits are acorns, maturing biennially, and have saucer- to cup-shaped caps that cover about a quarter of the nut.


Etymology

Origin of biennially

biennial ( def. ) + -ly

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Modeled on a millennia-old Greek tradition, the Olympic Truce has been introduced at the UN biennially since 1993 by the host country of the next edition of the Olympic Games.

From Barron's • Nov. 19, 2025

The Hero Cup has been introduced to give more players more experience of a matchplay team tournament with an eye on the Ryder Cup, which is staged biennially between Europe and the United States.

From BBC • Jan. 13, 2023

The drill, dubbed Keen Sword, takes place biennially around Japan.

From Reuters • Oct. 21, 2022

Called the Rim of the Pacific Exercise, the drills are the world’s largest held biennially.

From Seattle Times • Jul. 27, 2022

The legislature meets biennially, the senators being chosen for four, the representatives for two years.

From Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 5 "Fleury, Claude" to "Foraker" by Various