Trī'e-tēr'ie-al, a.
a. [Lat. trietericus, Gr. τριετηρικός, from τριετηρίς (sc. ἑορτή), a triennial festival, from τρι and ἔτος, a year.] Kept, or occurring, once in three years; triennial. [Rare.] Gregory.
a. [Lat. trietericus, Gr. τριετηρικός, from τριετηρίς (sc. ἑορτή), a triennial festival, from τρι and ἔτος, a year.] Kept, or occurring, once in three years; triennial. [Rare.] Gregory.