dio

dĭo or -ōn, ōnis, m., = Δίων.

• A brother-in-law of the elder Dionysius, of Syracuse, the pupil and friend of Plato. His life was written by Nepos and Plutarch; cf. also Cic. Tusc. 5, 35; id. de Or. 3, 34; Jornand. 2, 92.—
• II An Academic philosopher, Cic. Ac. 2 (Luc.), 4, 12.—
• III A Stoic philosopher, Cic. Leg. 3, 5 fin. dub. (al. Diogenes).—
• IV Dio Halaesinus, Cic. Verr. 2, 1, 10 al.