Monotremata
Pronunciation : Mon`o*trem"a*ta
Part of Speech : n.
Etymology : [NL., fr. Gr. (Zo?l.)
Definition : Defn: 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.
pl.
Source : Webster's Unabridged Dictionary, 1913