eohippus eohippus  /ˌi oʊ ˈhɪ pəs/

Definition(s):

  • (n) earliest horse; extinct primitive dog-sized four-toed Eocene animal

Usage(s):

  • If anthropologists had as clear a picture of human evolution as they have of horse evolution (a neat series ascending from four-toed little eohippus), their lives would be less .
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