DictionaryAI

biennial

by-EN-ee-ul/baɪˈɛn.i.əl/

Noun pluralbiennials

Often confused with biannual

4 meanings of biennial

Practice

  1. 1
    every two yearsadjective
    Happening one time every two years.

    The town holds a biennial art fair in the park.

    Our family reunion is biennial, so we only see our cousins every other summer.

    UsageBiennial means every two years. Biannual usually means twice a year.

  2. 2
    nouncountable
    An event that is held one time every two years.

    The town's music biennial is coming back next spring.

    Artists from forty countries took part in the biennial.

    Similarbiennale

    Note
  3. 3
    plantnouncountable
    A plant that lives for two years, growing in the first year and flowering in the second, then usually dying.

    This foxglove is a biennial, so it won't bloom until next summer.

    My grandmother plants new biennials every spring so some are always in flower.

  4. 4
    adjective
    Going on for two years.

    The state has a biennial budget that covers two years at a time.

    This flower is biennial, so each plant lives for just two years.

Practice

Can you tell the meanings of biennial apart? Answer 4 quick questions from this page, or write your own sentence and AI will check it.

Origin

It comes from a Latin word meaning "two-year period", made from words for "twice" and "year".

Checked 31 Oct 2026 · 4 facts