/ Dictionary / Index D developing-out paper: Meaning and Definition of Find definitions for: de•vel'op•ing-out' pa"per Pronunciation: (di-vel'u-ping out', -vel"-), [key] — Photog. Photog. a sensitized printing paper requiring development in order to bring out the image. Abbr.: D.O.P. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. developing development Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language