τρισύλλαβος

ον, Adv.
A. trisyllabic, D.H. Comp. 17, A.D. Synt. 8.1, Heph. 3.2, Luc. Philops. 35. Adv. ‐βως A.D. Pron. 78.23.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project