Definition of megaceros in English:

megaceros

Pronunciation /mɛˈɡas(ə)rəs/ /mɪˈɡas(ə)rəs/

noun

  • The Irish elk, a large extinct Pleistocene deer with very large antlers. Also (in form Megaceros): the genus containing this (now called Megaloceros).

Origin

Mid 19th century; earliest use found in Richard Owen (1804–1892), comparative anatomist and palaeontologist. From scientific Latin megaceros from mega- + ancient Greek κέρας, after rhinoceros.