sturgeon

UK: /ˈstɜː^rdʒ^ən/ US: /ˈstɝdʒən/ ,(stûr′jən)

Inflections of 'sturgeon' (n):

sturgeon

npl (Especially as a collective plural—e.g. "Sturgeon have long bodies.")

sturgeons

npl (Mainly used to talk about different types—e.g. "Many sturgeons are caught for their roe.")

WordReference Random House Learner's Dictionary of American English © 2025

stur•geon /ˈstɜrdʒən/   n. [countable] , pl. (esp. when thought of as a group) -geon, (esp. for kinds or species) -geons. 

1. Fish a large fish, valued as a source of caviar.

WordReference Random House Unabridged Dictionary of American English © 2025

stur•geon  (stûr′jən), n., pl. (esp. collectively) -geon,  (esp. referring to two or more kinds or species) -geons. 

1. Fish any of various large fishes of the family Acipenseridae, inhabiting fresh and salt North Temperate waters, valued for their flesh and as a source of caviar and isinglass:
   A. brevirostrum,
   of the Atlantic coast, is endangered.

• Gmc; compare Old English styria, Old High German sturio (German Stör), Old Norse styrja
• Anglo-French, Old French esturgeon
• Middle English 1250–1300

Stur•geon  (stûr′jən), n. 

1. Biographical Theodore (Hamilton), 1918–85, U.S. science-fiction writer.

Collins Concise English Dictionary © HarperCollins Publishers::

sturgeon / ˈstɜːdʒən/ noun

1. any primitive bony fish of the family Acipenseridae, of temperate waters of the N hemisphere, having an elongated snout and rows of spines along the body: valued as a source of caviar and isinglass

Etymology: 13th Century: from Old French estourgeon, of Germanic origin; related to Old English styria, Old High German sturio