monotreme

mono·treme

noun \ˈmä-nə-ˌtrēm\

Definition of MONOTREME

: any of an order (Monotremata) of egg-laying mammals comprising the platypuses and echidnas

Origin of MONOTREME

New Latin Monotremata, from Greek mon- + trēmat-, trēma hole — more at trematode

First Known Use: 1835

Rhymes with MONOTREME

academe, balance beam, blow off steam, buttercream, clotted cream, disesteem, double-team, enthymeme, heavy cream, misesteem, on the beam, self-esteem, treponeme