English edit

Etymology edit

From Latin trimillennialis, from tri- +‎ mill- (thousand) +‎ enni(us) (year) +‎ -al.

Noun edit

trimillennial (plural trimillennials)

  1. The 3,000th anniversary of an event or happening.

Translations edit

Adjective edit

trimillennial (not comparable)

  1. Occurring every three thousand years

Translations edit