/ Dictionary / Index D D.S.P.: Meaning and Definition of Find definitions for: D.S.P. Pronunciation: [key] died without issue. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. D.S.O. DSR Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language