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3 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 Sirenia
 海牛目

From: Webster's Revised Unabridged Dictionary (1913)

 Si·re·ni·a n. pl.  Zool. 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).
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From: WordNet (r) 2.0

 Sirenia
      n : manatees; dugongs; Stellar's sea cow [syn: order Sirenia]