[ sahy-ree-nee-uhn ]
/ saɪˈri ni ən /
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an aquatic, herbivorous mammal of the order Sirenia, including the manatee and dugong.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
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British Dictionary definitions for sirenian
/ (saɪˈriːnɪən) /
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
any animal belonging to the order Sirenia; a sea cow
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012