Cetacea
WordNet
noun
(1) An order of Eutheria
WiktionaryText
Etymology
cetus, whale, porpoise, dolphin < κῆτος (ketos) "any sea-monster or huge fish".
Proper noun
Cetacea
- a taxonomic order, within superorder Laurasiatheria - the whales, porpoises and dolphins
See also
- Mysticeti - baleen whales
- Odontoceti - dolphins, porpoises, and other toothed whales
- Archaeoceti - extinct whales