| Definition of 'cetacea' |
Princeton's WordNet |
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1. (noun) Cetacea, order Cetacea
an order of Eutheria
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| Definition of 'cetacea' |
Webster Dictionary |
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1. cetacea
an order of marine mammals, including the whales. Like ordinary mammals they breathe by means of lungs, and bring forth living young which they suckle for some time. The anterior limbs are changed to paddles; the tail flukes are horizontal. There are two living suborders:
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| Definition of 'cetacea' |
U.S. National Library of Medicine |
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1. cetacea
An order of wholly aquatic MAMMALS occurring in all the OCEANS and adjoining seas of the world, as well as in certain river systems. They feed generally on FISHES, cephalopods, and crustaceans. Most are gregarious and most have a relatively long period of parental care and maturation. Included are DOLPHINS; PORPOISES; and WHALES. (From Walker's Mammals of the World, 5th ed, pp969-70)
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Definitions of cetacea 
