sirenian

Other forms: sirenians

Definitions of sirenian

1. noun

   any of two families of large herbivorous aquatic mammals with paddle-shaped tails and flipper-like forelimbs and no hind limbs
   synonyms: sea cow, sirenian mammal

   types:

   Trichechus manatus, manatee

   sirenian mammal of tropical coastal waters of America; the flat tail is rounded

   Dugong dugon, dugong

   sirenian tusked mammal found from eastern Africa to Australia; the flat tail is bilobate

   Hydrodamalis gigas, Steller's sea cow

   extinct large sirenian mammal formerly found near the Asiatic coast of the Bering Sea

   type of:

   aquatic mammal

   whales and dolphins; manatees and dugongs; walruses; seals