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closed circuit

Closed circuit means a complete electrical connection around which current flows or circulates.

(noun)

When you have a series of electrical wires connecting to each other and completing a circuit so that current travels from one end of the circle to the other, this is an example of a closed circuit.

The definition of closed circuit is a system where video or other media is transmitted through connected cables and wires, not through the air.

(adjective)

When you have a video camera directly connected to a TV on the property that shows images from the video camera, this is an example of a closed-circuit TV.

See closed circuit in Webster's New World College Dictionary

a system for transmitting a telecast over cables, via satellite, etc. to a limited number of receivers connected to a circuit

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closed-circuit adjective

See closed circuit in American Heritage Dictionary 4

noun

An electric circuit providing an uninterrupted, endless path for the flow of current.
A television transmission circuit with a limited number of reception stations and no broadcast facilities.

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