open circuit

noun Electricity.
a discontinuous circuit through which no current can flow.
Compare closed circuit.


Origin:
1820–30

open-circuit, adjective
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Collins
World English Dictionary
open circuit
 
n
Compare closed circuit an incomplete electrical circuit in which no current flows

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
open circuit   (ō'pən)  Pronunciation Key 
An electric circuit in which the normal path of current has been interrupted, either by the disconnection of one part of its conducting pathway from another, or by the intervention of an electric component, such as a transistor. Compare closed circuit.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
The drug seemed to be completing some open circuit in his brain, turning it into a humming, pulsing lattice-work of neurones.
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