(zoology) Any of a group of aquatic, herbivorous mammals, of the order Sirenia, including the manatees and dugong.

Like a siren (mechanical or electronic device). / Like a siren (mythical water maiden).

(organic chemistry) A sexual attraction pheromone in some fungi of the genus Allomyces.

Alternative form of siren song

Of or relating to sirenomelia.

(teratology) A rare congenital deformity in which the legs are fused together, giving them the appearance of a mermaid's tail.

plural of sirenid

(zoology) Any member of the family Sirenidae of salamanders.

Without a siren.

simple past tense and past participle of sirenise