ἵππαρχ-ος,ὁ,
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.