Lewis Short
(adjective) : Aristō, ōnis, m., = Ἀρίστων
* A philosopher of Chios, a pupil of Zeno, founder of the sceptic philosophy, and contemporary of Coesar, Cic. N. D. 3, 31, 77; id. Leg. 1, 13.— Hence, Aristōnēus, a, um, , of or pertaining to Aristo, Aristonean: vitia,Cic. Fin. 4, 15, 40.
Charlton T. Lewis, Charles Short, A Latin Dictionary