/ Dictionary / Index S sargassumfish: Meaning and Definition of Find definitions for: sar•gas•sum•fish Pronunciation: (sär-gas'um-fish"), [key] — pl. -fish•es, -fish. an olive-brown and black frogfish, Histrio histrio, inhabiting tropical Atlantic and western Pacific seas among floating sargassum weed. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sargassum sarge Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language