Definition of litoptern in English:

litoptern

noun

  • An extinct South American hoofed mammal resembling a horse or camel, found from the Paleocene to the Pleistocene epochs.

    • ‘Many strange mammals - litopterns, notoungulates, ground sloths, borhyeanas, etc - continued to evolve in isolation in South America before a land bridge formed and allowed a devastating invasion of forms from the north.’

Origin

Early 20th century: from modern Latin Litopterna, from Greek litos smooth + pternē heel bone.

Pronunciation:

litoptern

/līˈtäpˌtərn/