Triennial

noun

/tɹaɪˈɛnɪəl/

Word Frequency: 0.3

Definitions

1.nounA third anniversary.

2.nounA plant that requires three years to complete its life-cycle.

3.adjectiveHappening every three years.

"triennial elections"

4.adjectiveLasting for three years.

"triennial parliaments; a triennial reign"

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