/ Thesaurus / J Synonyms of japanese oyster Find synonyms for: Noun1. Japanese oyster, Ostrea gigas, oysterusage: a large oyster native to Japan and introduced along the Pacific coast of the United States; a candidate for introduction in Chesapeake BayWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language