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closed circuit

noun, Electricity.
a circuit without interruption, providing a continuous path through which a current can flow.
Compare open circuit.
Origin of closed circuit
First recorded in 1820-30
Related forms
closed-circuit, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for closed circuit
Contemporary Examples
Historical Examples
  • When this connection is made, the circuit is called a "closed circuit."

  • "Special buses will take them to closed circuit 3-D houses," said Cam.

    Telempathy Vance Simonds
  • Now you have a circuit—a closed circuit when the electricity runs all the way from the positive pole to the negative pole.

  • Back in nineteen twenty, physicists had succeeded in making a current flow for four hours in a closed circuit.

    Islands of Space John W Campbell
  • Each of the columns of five day-signs forms a closed circuit returning into itself.

  • To study the effect of starting or stopping a current near a coil of wire or other closed circuit.

  • This winding forms a closed circuit whether the bell is ringing or not.

    Physics Willis Eugene Tower
  • Will they make up their minds to leave their closed circuit, to swerve to this side or that?

    Insect Adventures J. Henri Fabre
  • The variable condenser shunted across the closed circuit permits finer secondary tuning to be done than is possible without it.

    The Radio Amateur's Hand Book A. Frederick Collins
British Dictionary definitions for closed circuit

closed circuit

a complete electrical circuit through which current can flow when a voltage is applied Compare open circuit
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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closed circuit in Science
closed circuit  
  1. An electric circuit through which current can flow in an uninterrupted path. Compare open circuit.

  2. A television system in which the signal is usually sent by cable to a limited number of receivers.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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