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Definition 2024

trigintennial

trigintennial

English

Adjective

trigintennial ‎(not comparable)

  1. (uncommon) Synonym of tricennial: Occurring once in thirty years or every thirty years.

References

  • Oxford English Dictionary, "trigintennial, adj."

Etymology

From Latin triginta ‎(“thirty”) + -ennium ‎(“forming periods of years”) [from annus ‎(“year”) + -ium ‎(“forming groups”)] + -al ‎(“forming adjectives”).

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