from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Any of various large ganoid freshwater and marine fishes of the family Acipenseridae of the Northern Hemisphere, having edible flesh and valued as a source of caviar and isinglass.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any marine or freshwater fish of the family Acipenseridae that are famed for their roe.

from the GNU version of the Collaborative International Dictionary of English

  • n. Any one of numerous species of large cartilaginous ganoid fishes belonging to Acipenser and allied genera of the family Acipenseridæ. They run up rivers to spawn, and are common on the coasts and in the large rivers and lakes of North America, Europe, and Asia. Caviar is prepared from the roe, and isinglass from the air bladder.

from The Century Dictionary and Cyclopedia

  • n. A chondroganoid fish of the order Chondrostei and family Acipenseridæ (see the technical names).

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. large primitive fishes valued for their flesh and roe; widely distributed in the North Temperate Zone


Middle English, from Anglo-Norman, from Old French estourgeon, of Germanic origin.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Old French esturgon, from Frankish *sturjo. (Wiktionary)



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