/ Dictionary / Index S spark gap: Meaning and Definition of Find definitions for: spark' gap" Pronunciation: [key] — Elect. Elect. a space between two electrodes, across which a discharge of electricity may take place. the electrodes and the space between, considered as a unit: used in ignition systems. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sparker spark generator Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language