/ Dictionary / Index A Argonaut: Meaning and Definition of Find definitions for: Ar•go•naut Pronunciation: (är'gu-nôt", -not"), [key] — n. a member of the band of men who sailed to Colchis with Jason in the ship Argo in search of the Golden Fleece. (sometimes l.c.) a person in quest of something dangerous but rewarding; adventurer. a person who moved to California during the gold rush of 1849. (l.c.) See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: argonaut (Thesaurus) argon Argonne Forest Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language