/ Dictionary / Index D D.C.S.: Meaning and Definition of Find definitions for: D.C.S. Pronunciation: [key] Deputy Clerk of Sessions. Doctor of Christian Science. Doctor of Commercial Science. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: dcs (Thesaurus) D.Crim. DD 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