/ Dictionary / Index C commercial break: Meaning and Definition of Find definitions for: commer'cial break" Pronunciation: [key] a short interruption during radio or television programming for the broadcasting of a commercial or commercials. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. commercial bank commercial code Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language