what is a half human half horse called

A half human half horse is called a centaur. In Greek mythology, centaurs were a race of creatures that were part horse and part man, dwelling in the mountains of Thessaly and Arcadia. They were considered to be wild, lawless, and inhospitable beings, the slaves of their animal passions. However, Chiron, a notable exception, was a wise and civilized centaur known for his medicinal skills and teaching abilities. The idea of centaurs may have come from the first reaction of a non-riding culture to nomads who were mounted on horses.