1 glow plug | Definition of glow plug
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glow plug

noun

Definition of glow plug

: a heating element in a diesel-engine cylinder to preheat the air and facilitate starting also : a similar element for ignition in other internal combustion engines

Examples of glow plug in a Sentence

Recent Examples on the Web

 Thanks to active thermal management and ceramic glow plugs, an engine block heater is not needed until minus-22 degrees F, Chevy said. — Jeff Yip, Houston Chronicle, "Chevy adds new 460 lb.-ft. Duramax to 2020 Silverado 1500 lineup," 2 July 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'glow plug.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of glow plug

circa 1941, in the meaning defined above

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