- a coil of many turns of insulated wire on an iron core, used for producing sparks.
Origin of spark coil
First recorded in 1895–1900
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for spark coil
He succeeded in digging up a spark-coil—and that is all I ever saw of the engine.
Considering the size of that reward, he had undoubtedly become greatly attached to his spark-coil!
- an induction coil used to produce spark discharges
- An induction coil used to induce sparks in the spark plugs of an internal combustion engine. See more at induction coil.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.