/ Dictionary / Index S sediment: Meaning and Definition of Find definitions for: sed•i•ment Pronunciation: (n.sed'u-muntv.sed'u-ment&sec), [key] — n. the matter that settles to the bottom of a liquid; lees; dregs. mineral or organic matter deposited by water, air, or ice. —v.t. to deposit as sediment. —v.i. to form or deposit sediment. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sediment (Thesaurus) sedile sedimentary Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language