/ Dictionary / Index O open flash: Meaning and Definition of Find definitions for: o'pen flash' Pronunciation: [key] — Photog. Photog. a photographic technique employing a flash fired while the camera shutter is held open. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. open field open fracture 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