Tricennial

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Tricennial \Tri*cen"ni*al\, a. [L. tricennium thirty years;
     triginta thirty + annus year: cf. L. tricennalis.]
     Of or pertaining to thirty years; consisting of thirty years;
     occurring once in every thirty years.
     [1913 Webster]