/ Dictionary / Index R RGB: Meaning and Definition of Find definitions for: RGB Pronunciation: [key] — Television. Television. red-green-blue. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. r.g. RGNP Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language