1. A celebrated Alexandrian grammarian of the time of Cicero and the emperor Augustus. He was a disciple or rather a follower of the school of Aristarchus (Ἀριστάρχειος, Lehrs, de Aristarchi stud. Homer. p. 18, &c.), and is said to have been the son of a dealer in salt fish. He was the teacher of Apion, Heracleides Ponticus, and other eminent men of the time.