hipparion Meaning, Definition & Usage

Hip*pa"ri*on noun
Etymology
NL., fr. Gr. a pony, dim. of a horse.
Definitions
  1. (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.

Webster 1913