elephant seal

noun

Definition of elephant seal

  1. :  either of two very large seals (genus Mirounga of the family Phocidae) characterized by a long inflatable proboscis:a :  one (M. angustirostris) found in Pacific coastal waters from southeastern Alaska to Baja Californiab :  one (M. leonina) found in coastal waters of subantarctic islands and Patagonia

First Known Use of elephant seal

1839


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