Trieterical Tri`e*ter"ic*al, a. [L. trietericus, Gr. ?, fr. ?
(sc. ?) a triennialfestival; ? (see {Tri-}.) + ? a year.]
Kept or occurring once in three years; triennial. [R.] --J.
Gregory.
[1913 Webster]
The Collaborative International Dictionary of English.
2000.
