closed circuit

noun

, Electricity.

1. a circuit without interruption, providing a continuous path through which a current can flow.

closed circuit

noun

1. a complete electrical circuit through which current can flow when a voltage is applied Compare open circuit

closed circuit

1. An electric circuit through which current can flow in an uninterrupted path.
2. Compare open circuit
3. A television system in which the signal is usually sent by cable to a limited number of receivers.

Other Words From

• closed-circuit adjective

Word History and Origins

Origin of closed circuit¹

First recorded in 1820–30

Example Sentences

Closed-circuit videos show a suspect who is white, 35 to 45 years old, and has salt-and-pepper hair.

From The Daily Beast

The videos were filmed from multiple closed-circuit cameras throughout the compound, and are at times grainy and hard to decipher.

From The Daily Beast

There were no closed-circuit television cameras operating in the area near the blast.

From The Daily Beast

Closed-circuit footage from a nearby shop shows at least three other security personnel simply standing by.

From The Daily Beast

Is writing simply a borderless act or can we ascribe a closed-circuit origin to it?

From The Daily Beast

Keep in mind the fact that the lamp will always burn on an open circuit and go out on a closed circuit.

From Project Gutenberg

Fire and burglar alarms are divided into two general types, called "open circuit" and "closed circuit," respectively.

From Project Gutenberg

An ordinary telegraph relay may be used in connection with the closed-circuit alarm.

From Project Gutenberg

The operation of a drop on a closed circuit is a little different from its operation on a normally open circuit.

From Project Gutenberg

The alarm switches are all connected in series in this case and in circuit with a closed-circuit battery and relay or drop.

From Project Gutenberg