/ Dictionary / Index G glow discharge: Meaning and Definition of Find definitions for: glow' dis"charge Pronunciation: [key] — Physics. Physics. the conduction of electricity in a low-pressure gas, producing a diffuse glow. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. glow glower Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language