/ Dictionary / Index S sapropel: Meaning and Definition of Find definitions for: sap•ro•pel Pronunciation: (sap'ru-pel"), [key] — n. mud consisting chiefly of decomposed organic matter formed at the bottom of a stagnant sea or lake. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sapropel (Thesaurus) saprolite saprophagous Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language