/ Dictionary / Index D D.C.M.: Meaning and Definition of Find definitions for: D.C.M. Pronunciation: [key] — Brit. Brit. Distinguished Conduct Medal. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. D.C.L. D.Cn.L. Related Content Daily Word Quiz: alacrity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language