noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   An extinct, gigantic, ground sloth (genus Megatherium) that flourished in South America during the Pleistocene epoch.
2. 2
   gigantic extinct terrestrial sloth-like mammal of the Pliocene and Pleistocene in America wordnet
3. 3
   A member of the family Megatheriidae

Synonyms

All synonyms

ground slothground sloth

Etymology

From Ancient Greek μέγας (mégas, “large”) + θηρίον (thēríon, “wild beast”).

Related phrases

south america

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.