Trisyllabic

{ Tris′yl‐lab″ic (?), Tris′yl‐lab″ic‐al (?), } a. [L. trisyllabus, Gr. �; � (see Tri-) + � a syllable: cf. F. trissyllabique.] Of or pertaining to a trisyllable; consisting of three syllables; as, “syllable” is a trisyllabic word. — Tris′yllab″ic‐al‐ly, adv.