/ Dictionary / Index F flame retardant: Meaning and Definition of Find definitions for: flame' retard"ant Pronunciation: [key] a compound used in cloth and plastic material to raise the ignition point of the material, thus making it resistant to fire. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. flameproof flame stitch Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language