- tricennium
- trīcennĭum, ii, n. [triginta-annos], the space of thirty years, Cod. Just. 7, 31, 1; Sid. Ep. 8, 6 med.; Cassiod. Var. 1, 18; 3, 31.
Lewis & Short Latin Dictionary, 1879. - Revised, Enlarged, and in Great Part Rewritten. Charlton T. Lewis, Ph.D. and Charles Short. 2011.