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triennial

adjective

/traɪˈɛniəl/

Meaning

Occurring once every three years.

The art festival is a triennial event in the city.

three-yearly, periodic, recurring

annual, monthly

triennial event, triennial report, triennial gathering

covered with or full of spines; having sharp points

Able to be tolerated or endured; bearable.

self-righteously moralistic and superior

Characterized by high energy and vitality.

Very loving, loyal, or dedicated.

Relating to the provision of education.