/ Dictionary / Index F film speed: Meaning and Definition of Find definitions for: film' speed" Pronunciation: [key] — Photog. Photog. speed (def. 5a). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. filmsetting filmstrip Related Content Daily Word Quiz: entomology Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language