The typical Ipotane looked overall human, but had the legs, hindquarters, tail, and ears of a horse. However, some had humanlike rather than horselike legs (compare with early Centaurs, whose front legs were often humanlike). The Greek suggested by "ipotane" is ἱππότης (hippotas). It means a person riding a horse. It is also used as an adjective as in ἱππότης λεὼς (hippotas leos) — horse riding people. The definition given above would fit ἱππότης λεὼς — "horse-people".
Cf. Liddell & Scott, Greek-English Lexicon.
Such a person would not look "overall human"; rather, the torso would look human.