Trī-cĕn'ni-al, a.
a. [Lat. tricennalis, from tricennium, thirty years, from triginta, thirty, and annus, year.] Of, pertaining to, or consisting of, thirty years; occurring once in every thirty years.
a. [Lat. tricennalis, from tricennium, thirty years, from triginta, thirty, and annus, year.] Of, pertaining to, or consisting of, thirty years; occurring once in every thirty years.