megathere Meaning, Definition & Usage

  1. noun gigantic extinct terrestrial sloth-like mammal of the Pliocene and Pleistocene in America
    ground sloth.

WordNet

Meg"a*there, Meg`a*the"ri*um noun (Also<
  • Megathere
  • Megatherium
)
Etymology
NL. megatherium, fr. Gr. me`gas great + thyri`on beast.
Definitions
  1. (Paleon.) An extinct gigantic quaternary mammal, allied to the ant-eaters and sloths. Its remains are found in South America.

Webster 1913