/ Dictionary / Index S screen grid: Meaning and Definition of Find definitions for: screen' grid" Pronunciation: [key] — Electronics. Electronics. a grid placed between the anode and the control electrode in a vacuum tube, usually maintained at a fixed positive potential. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Screen Actors Guild screening Related Content Daily Word Quiz: hedonist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language