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ignition coil

noun

  1. (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.

ignition coil

noun

  1. an induction coil that supplies the high voltage to the sparking plugs of an internal-combustion engine
“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
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Word History and Origins

Origin of ignition coil1

First recorded in 1895–1900
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Example Sentences

A third method uses a Ford ignition coil, as shown in Fig. 222.

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