Hipparchus, i, m., = Ἵππαρχος.
I A son of Pisistratus tyrant of Athens , and brother of Hippias , killed by Harmodius and Aristogiton , Gell. 17, 21, 7.—
II A celebrated astronomer of Nicaea , Cic. Att. 2, 6, 1; Plin. 2, 26, 24, § 95; 2, 12, 9, § 53; 2, 77, 79, § 188; Mel. 3, 7, 7 al.