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spark-killer

[spahrk-kil-er] /ˈspɑrkˌkɪl ər/
noun, Electricity
1.
a device for diminishing sparking, consisting of a capacitor and a resistor connected in series across two points where sparking may occur in a circuit.
Origin
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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