/ Dictionary / Index D detritus: Meaning and Definition of Find definitions for: de•tri•tus Pronunciation: (di-trī'tus), [key] — n. rock in small particles or other material worn or broken away from a mass, as by the action of water or glacial ice. any disintegrated material; debris. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: detritus (Thesaurus) detritivore Detroit Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language