Lewis & Short

Plăto or Plăton, ōnis, = Πλάτων.

  1. I. A celebrated Grecian philosopher, the disciple of Socrates, the instructor of Aristotle, and founder of the Academic philosophy, Cic. Leg. 3, 1, 1; id. Brut. 31, 121; id. Tusc. 1, 17, 39; id. Or. 3, 12: Plato divinus auctor, id. Opt. Gen. Or. 6; Sen. Ep. 6, 6, 13.
    In Greek acc.: doctum Platona, Hor. S. 2, 4, 3; Petr. 2, 5.
    Hence,
    1. B. Plătōnĭcus, a, um, adj., = Πλατωνικός, of or belonging to Plato, Platonic: sublimitas, Plin. Ep. 1, 10, 5: philosophus, Gell. 15, 2, 1: homo, speaking of Cicero, Q. Cic. Petit. Cons. 12, 46: ideae, Sen. Ep. 6, 6, 26.
      Subst.: Plă-tōnĭci, ōrum, m., followers of the Platonic philosophy, Platonists, Cic. Off. 1, 1, 2.
  2. II. An obscure Epicurean of Sardis, contemporary with Cicero, Cic. Q. Fr. 1, 2, 4, § 14.