any of an extinct genus (Megatherium) of very large, plant-eating, ground-dwelling sloths
Origin of megatheriumModern Latin ; from Classical Greek megas (see mega-) + th?rion, beast ; from th?r, wild animal: see fierce
A large extinct ground sloth of the genus Megatherium of the Miocene Epoch through the Pleistocene Epoch.
Origin of megatheriumNew Latin Megath&emacron;rium, genus name : mega– + Greek th&emacron;rion, wild beast; see treacle.
Ancient Greek μέγας (megas, “great”) + θηρίον (thērion, “beast”)