white sturgeon whi·tes·tur·geon uncommon noun 1. valuable source of caviar and isinglass; found in Black and Caspian seas Synonymsbelugahausenwhite sturgeonAcipenser huso 2. food and game fish of marine and fresh waters of northwestern coast of North America SynonymsPacific sturgeonwhite sturgeonSacramento sturgeonAcipenser transmontanus Related words Broader terms sturgeon Parts Acipenser Part of beluga caviar WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.