Meaning & use
triennial
Last updated
Occurring every three years, or lasting for a period of three years.
See it in a sentence
The society holds a triennial conference in a different country each time.
Her triennial review determined whether she would be promoted.
A note on using this word
From Latin 'tri-' (three) plus 'annus' (year); compare 'biennial' (every two years) and 'perennial' (continuing year after year).
Words with a similar meaning
three-yearly
Choose a synonym to suit the sentence. Meanings can overlap without being identical.
Words with an opposite meaning
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