Monotremata

Monotremata

Mon`o*trem"a*ta\, n. pl. [NL., fr. Gr. ? single + ? hole.] (Zo["o]l.) A subclass of Mammalia, having a cloaca in which the ducts of the urinary, genital, and alimentary systems terminate, as in birds. The female lays eggs like a bird. See Duck mole, under Duck, and Echidna.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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