Also found in: Thesaurus.
Related to order Sirenia: order Perissodactyla, order Proboscidea, order Artiodactyla, order Cetacea, manatee, Paenungulata
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|Noun||1.||order Sirenia - an animal order including: manatees; dugongs; Steller's sea cow|
animal order - the order of animals
sea cow, sirenian, sirenian mammal - any of two families of large herbivorous aquatic mammals with paddle-shaped tails and flipper-like forelimbs and no hind limbs