| sirenia | (n) an animal order including: manatees; dugongs; Steller's sea cow, Syn. order Sirenia |
| Sirenia | n. pl. [ NL. ] (Zool.) An order of large aquatic herbivorous mammals, including the manatee, dugong, rytina, and several fossil genera. [ 1913 Webster ] ☞ 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 |
| Sirenian | n. (Zool.) Any species of Sirenia. [ 1913 Webster ] |
| 海牛 | [かいぎゅう;カイギュウ, kaigyuu ; kaigyuu] (n) (uk) serenian (any aquatic mammal of order Sirenia, inc. manatees, and dugongs); sea cow [Add to Longdo] |