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circular
circular breathing
circular flow of income
circular function
circular measure
circular polarization
circular saw
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circuit breaker
cir·cuit break·er (plural cir·cuit brea·kers)


noun 
Definition:
 
safety shut-off in electric circuit: a device that can automatically stop the flow of electricity in a circuit if there is too much current to operate safely
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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