/ Dictionary / Index D DCPA: Meaning and Definition of Find definitions for: DCPA Pronunciation: [key] Defense Civil Preparedness Agency. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. D.Cn.L. D.Crim. Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language