Meaning of SIRENIAN MAMMAL

WordNet Dictionary
	Definition:		[n]  any of two families of large herbivorous aquatic mammals with paddle-shaped tails and flipper-like forelimbs and no hind limbs
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	Synonyms:		sea cow, sirenian
	See Also:		aquatic mammal, dugong, Dugong dugon, Hydrodamalis gigas, manatee, order Sirenia, Sirenia, Steller's sea cow, Trichechus manatus