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Definition of triennially
triennially
/traɪˈɛn.i.ə.li/
tri · en · ni · al · ly
Adjective:triennial
triennially Lexical Profile
CEFR
C1
Grade
12
Tier
2
Usage
Rare
Syllables
5
triennially Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• adverb
1
Once every three years; at three-year intervals.
Example
"The international summit convenes triennially to review global environmental standards."
• Rhymes for triennially
Word Origin & Etymology
Formed from the adjective 'triennial' plus the suffix '-ly', tracing back to the Latin 'triennium', which combines 'tri-' (three) and 'annus' (year).
Cite this Entry
Wordmom. (2026). Definition of Triennially. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/triennially