eohippus

Pronunciation key ( ē′ō-hip′əs )

e•o•hip•pus

n.

[Mod. L. < eo- + Gr. hippos horse].

An extinct prehistoric ancestor of the modern horse which was about the size of a fox and had toes instead of hoofs.

References

Webster's New World Dictionary of the American Language (College Edition) ©1955

Eohippus, American Museum of Natural History