n.
Pronunciation: s ī - ' r ē -n ē - ə n
Function: noun
Etymology: New Latin Sirenia, from Latin siren
Date: 1883
: any of an order (Sirenia) of aquatic herbivorous mammals (as a manatee, dugong, or Steller's sea cow) that have large forelimbs resembling paddles, no hind limbs, and a flattened tail resembling a fin
– sirenian adjective