# biannual

> English word · Adjective · IPA /bʌɪˈanjuːəl/ · frequency rank #55,277

## Definitions
1. Occurring twice a year; semiannual.
2. Occurring once every two years; biennial.

## Etymology
From bi- + annual.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/biannual