cetacean

play
noun ce·ta·cean \si-ˈtā-shən\

Definition of cetacean

  1. :  any of an order (Cetacea) of aquatic mostly marine mammals that includes the whales, dolphins, porpoises, and related forms and that have a torpedo-shaped nearly hairless body, paddle-shaped forelimbs but no hind limbs, one or two nares opening externally at the top of the head, and a horizontally flattened tail used for locomotion

cetacean

adjective

cetaceous

play \-shəs\ adjective

Origin and Etymology of cetacean

ultimately from Latin cetus whale, from Greek kētos


First Known Use: 1835


CETACEAN Defined for English Language Learners

cetacean

play
noun ce·ta·cean \si-ˈtā-shən\

Definition of cetacean for English Language Learners

  • : a mammal (such as a whale, dolphin, or porpoise) that lives in the ocean


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