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WordReference Random House Unabridged Dictionary of American English © 2024si•re•ni•an (sī rē′nē ən),USA pronunciation n. - Mammalsan aquatic, herbivorous mammal of the order Sirenia, including the manatee and dugong.
- Neo-Latin Sireni(a) (see siren, -ia) + -an
- 1880–85
Collins Concise English Dictionary © HarperCollins Publishers:: sirenian /saɪˈriːnɪən/ adj - of, relating to, or belonging to the Sirenia, an order of aquatic herbivorous placental mammals having forelimbs modified as paddles, no hind limbs, and a horizontally flattened tail: contains only the dugong and manatees
n - any animal belonging to the order Sirenia; a sea cow
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