| hipparchus | (n) Greek astronomer and mathematician who discovered the precession of the equinoxes and made the first known star chart and is said to have invented trigonometry (second century BC) |
| Hipparion | ‖n. [ NL., fr. Gr. &unr_; a pony, dim. of &unr_; a horse. ] (Paleon.) An extinct genus of Tertiary mammals allied to the horse, but three-toed, having on each foot a small lateral hoof on each side of the main central one. It is believed to be one of the ancestral genera of the Horse family. |
| Hippe | |