First Known Use: 1883
Dictionary
sirenian
noun si·re·ni·an \sī-ˈrē-nē-ən\
Definition of SIRENIAN
: 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
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Origin of SIRENIAN
New Latin Sirenia, from Latin siren
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