ignition coil

noun
(in an automotive ignition system) a transformer consisting of two wire windings or coils in which low-voltage direct current is fed through the primary winding to generate high-voltage spark pulses in the secondary winding.
Also called coil.


Origin:
1895–1900

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
ignition coil
 
n
an induction coil that supplies the high voltage to the sparking plugs of an internal-combustion engine

Collins English Dictionary - Complete & Unabridged 10th Edition
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Example sentences
Water or oil may enter into the ignition coil cover and the spark plug bore causing a misfire.
As he attempted to remove the spark plug wire from the ignition coil there was a small arc fire that generated from the coil.
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