Sirenia
Pronunciation : Si*re"ni*a
Part of Speech : n.
Etymology : [NL.] (Zo?l.)
Definition : Defn: An order of large aquatic herbivorous mammals, including the manatee, dugong, rytina, and several fossil genera.
Note: The hind limbs are either rudimentary or wanting, and the front ones are changed to paddles. They have horny plates on the front part of the jaws, and usually flat-crowned molar teeth. The stomach is complex and the intestine long, as in other herbivorous mammals. See Cetacea (b).
pl.
Source : Webster's Unabridged Dictionary, 1913