[ meg-uh-theer ]
/ ˈmɛg əˌθɪər /


any of the huge, slothlike animals of the extinct genus Megatherium, or closely related genera, that lived from the Oligocene to the Pleistocene epochs.

Origin of megathere

1830–40; < New Latin Megatherium; see mega-, -there Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for megathere

/ (ˈmɛɡəˌθɪə) /


any of various gigantic extinct American sloths of the genus Megatherium and related genera, common in late Cenozoic times

Derived forms of megathere

megatherian, adjective

Word Origin for megathere

C19: from New Latin megathērium, from mega- + -there, from Greek thērion wild beast
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012