/ Dictionary / Index C closed-circuit television: Meaning and Definition of Find definitions for: closed'-circuit tel'evision Pronunciation: [key] a system of televising by cable to designated viewing sets, as within a factory for monitoring production operations, in a theater for viewing a special event taking place elsewhere, or in an office building as an aid to maintaining security. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. closed circuit closed cornice Related Content Daily Word Quiz: denizen Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language