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Definitions

spark plug

NOUN
device that ignites fuel in engine
Synonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The spark plug ignites a fuel-air mix, causing the rotor to turn a shaft, creating motion.

From The Wall Street Journal • Apr. 24, 2026

First Brands said Monday it has started winding down Brake Parts, aftermarket parts maker Cardone and spark plug manufacturer Autolite.

From The Wall Street Journal • Jan. 26, 2026

That caused a short-circuit and "arcing" - electric sparks like those in a spark plug - which resulted in a "catastrophic failure".

From BBC • Jul. 2, 2025

Lizotte, meanwhile, brings a different kind of energy as the Kings’ spark plug and emotional leader, especially on the penalty kill.

From Los Angeles Times • Apr. 30, 2024

Leo doubted the poor guy could pop a spark plug in the shape he was in.

From "The Mark of Athena" by Rick Riordan




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