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Spark plug   /spɑrk pləg/   Listen
noun
Spark plug  n.  In internal-combustion engines with electric ignition, a plug, screwed into the cylinder head, connected with the induction coil or magneto circuit on the outside, and used to produce a spark to ignite the fuel-air mixture in the engine.






Collaborative International Dictionary of English 0.48








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"Spark plug" Quotes from Famous Books



... as energy from the cables was transformed to a tangible thing—a vast bulk of gas, of hydrogen and oxygen that had once been water, and the pressure of the gas made a roaring inferno of the exhausts. A spark plug ignited it, and the heat of combustion added pressure to pressure, while the quivering, invisible live steam poured forth to change to vaporous clouds ...
— Astounding Stories, February, 1931 • Various

... some conversation with him this morning," laughed Roy; "but to return to the spark plug; it's a good thing we carry ...
— The Girl Aviators' Motor Butterfly • Margaret Burnham



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