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.

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.