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closed-circuit television

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.
Origin of closed-circuit television
First recorded in 1945-50 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for closed-circuit television
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Historical Examples
  • I'll probably stick to electric-eye doors, burglar alarms, closed-circuit television systems and things like that.

    Creatures of the Abyss Murray Leinster
British Dictionary definitions for closed-circuit television

closed-circuit television

a television system in which signals are transmitted from a television camera to the receivers by cables or telephone links forming a closed circuit, as used in security systems, etc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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