sirenian noun & adjective. [sʌɪ'ri:nɪǝn] L19.
[from mod. Latin Sirenia (see below), from Latin SIREN + -IA²: see -IAN.]
Zoology.
A. noun. Any of various aquatic herbivorous mammals of the order Sirenia, with stocky streamlined bodies, forelimbs modified as flippers, and no hindlimbs; a dugong or sea cow, a manatee. L19.
b. adjective. Of, belonging to, or characteristic of this order. L19.

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