'Trieterical' definitions:
Definition of 'Trieterical'
From: GCIDE
- Trieterical \Tri`e*ter"ic*al\, a. [L. trietericus, Gr. ?, fr. ? (sc. ?) a triennial festival; ? (see Tri-.) + ? a year.] Kept or occurring once in three years; triennial. [R.] --J. Gregory. [1913 Webster]