/ Dictionary / Index F flashover: Meaning and Definition of Find definitions for: flash•o•ver Pronunciation: (flash'ō"vur), [key] — n. a disruptive discharge around or over the surface of a solid or liquid insulator. the moment of conflagration or complete incineration caused by superheated air or combustibles. —v.i. to have or experience a flashover. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: flashover (Thesaurus) flash memory flash photography Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language