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monotreme

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monotreme

Main Entry:: mono·treme
Pronunciation:: \ˈmä-nə-ˌtrēm\
Function:: noun
Etymology:: New Latin Monotremata, from Greek mon- + trēmat-, trēma hole — more at trematode
Date:: 1835

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

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