Definition of triennial

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  • triennial is a valid Scrabble US word with a point value of 9
  • triennial is a valid Scrabble UK word with a point value of 9
  • triennial is a valid Words with friends word with a point value of 12

Definition of triennial

  • the 300th anniversary (or the celebration of it) (noun)

    Synonyms

    1. tercentenary
    2. tercentennial
  • occurring every third year or lasting 3 years (adjective)

See definition of triennial in Merriam Webster