beluga

[ buh-loo-guh ]
/ bəˈlu gə /

noun

Also called hausen. a white sturgeon, Huso huso, of the Black and Caspian seas, valued as a source of caviar and isinglass.
Also called sea canary, white whale. a cetacean, Delphinapterus leucas, of northern seas, that has a rounded head and is white when adult.

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Origin of beluga

1585–95; < Russian belúga (now regularly belúkha for the cetacean), equivalent to bél(yĭ) white + -uga, probably earlier *-ǫga (compare Czech pstruh, Polish pstrąg trout < *pĭstr- mottled + *-ǫgŭ a cognate suffix)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

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British Dictionary definitions for beluga

beluga
/ (bɪˈluːɡə) /

noun

a large white sturgeon, Acipenser (or Huso) huso, of the Black and Caspian Seas: a source of caviar and isinglass
another name for white whale

Word Origin for beluga

C18: from Russian byeluga, from byely white
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012