/ Dictionary / Index G grid bias: Meaning and Definition of Find definitions for: grid' bi"as Pronunciation: [key] — Electronics. Electronics. the potential difference applied between a grid and the cathode of a vacuum tube. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. grid grid capacitor Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language