• synonyms

closed circuit

noun Electricity.
  1. a circuit without interruption, providing a continuous path through which a current can flow.
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Compare open circuit.

Origin of closed circuit

First recorded in 1820–30
Related formsclosed-cir·cuit, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for closed circuit

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British Dictionary definitions for closed circuit

closed circuit

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

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.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.