ἵππαρχος

A. ruling the horse, epith. of Poseidon, Pi. P. 4.45.

II. commander of cavalry, τῆς ἵππου Hdt. 7.154; at Athens, IG 22.116.15 (iv B.C.), Ar. Av. 799, Lys. 16.8, Pl. Lg. 755c, 880d, X. Eq.Mag. 1.7,al.; ἵ. εἰς Λῆμνον χειροτονεῖν Hyp. Lyc. 17, cf. D. 4.26; in other states, Th. 4.72, IG 7.2466 (Thebes, iii B.C.), etc.; in the Achaean league, ib.5(2).344.7 (Orchomenus), etc.; = Lat. magister equitum, D.S. 12.64, Plu. Cam. 5, etc.; = praefectus equitum, App. Hisp. 47; cf. ἱππάρχης.