cetacean

ce·ta·cean  (s-tshn)

n.

Any of various aquatic, chiefly marine mammals of the order Cetacea, including the whales, dolphins, and porpoises, characterized by a nearly hairless body, anterior limbs modified into broad flippers, vestigial posterior limbs, and a flat notched tail.

adj. also ce·ta·ceous (s-tshs)

Of, relating to, or belonging to the order Cetacea.

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[From New Latin Ctcea, order name, from Latin ctus, whale; see Cetus.]

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cetacean [sit-tay-shun]

Noun

a sea creature such as a whale or dolphin, which belongs to a family of fish-shaped mammals and breathes through a blowhole [Greek kētos whale]

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cetacean  (s-tshn)

Any of various, often very large aquatic mammals of the order Cetacea, having a hairless body that resembles that of a fish. Cetaceans have an elongated skull, a flat, horizontal tail, forelimbs modified into broad flippers, and no hind limbs. They breathe through blowholes located usually at the top of the skull. Whales, dolphins, and porpoises are cetaceans. See more at baleen whaletoothed whale

Thesaurus

Noun	1.	cetacean - large aquatic carnivorous mammal with fin-like forelimbs no hind limbs, including: whales; dolphins; porpoises; narwhals cetacean mammal, blower aquatic mammal - whales and dolphins; manatees and dugongs; walruses; seals Cetacea, order Cetacea - an order of Eutheria whale - any of the larger cetacean mammals having a streamlined body and breathing through a blowhole on the head fluke - either of the two lobes of the tail of a cetacean blowhole - the spiracle of a cetacean located far back on the skull pod - a group of aquatic mammals
Adj.	1.	cetacean - of or relating to whales and dolphins etc cetaceous