closed-circuit television

American  

noun

1. 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.

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closed-circuit television British  

noun

1. 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

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Etymology

Origin of closed-circuit television

First recorded in 1945–50

Example Sentences

See Examples For:

closed-circuit television

GS Vice President Ally Kim, who leads 52g, said the team used Graphon to improve analysis of closed-circuit television recordings that monitor construction sites for safety compliance.

From The Wall Street Journal ● May 14, 2026

That material includes 1.3 million pages of unclassified documents, 5,500 pages of classified documents and 60 terabytes of closed-circuit television footage, she said.

From BBC ● Mar. 1, 2024

“On a closed-circuit television, rock bottom can look like sitting on a couch.”

From Los Angeles Times ● Jun. 19, 2023

It was Feb. 11, 2013, and Chirri was watching closed-circuit television coverage of Pope Benedict XVI presiding over a pro-forma meeting of cardinals to set dates for three upcoming canonizations.

From Seattle Times ● Jan. 1, 2023

As moves were made on the board, they were simultaneously shown on forty closed-circuit television monitors, in all points of the stadium.

From "Endgame" by Frank Brady