spark plugs

A form of spark plug — The part of some internal combustion engines which forms a high-voltage electric spark which ignites the fuel-air mixture to begin the power stroke. (Petrol engines have spark plugs. Diesel engines do not have them because the heat from their high compression ratios supplies the ignition.)

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Meanings

noun
  1. pluralplural of spark plug
Cite this entry
APA

spark plugs. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/spark%20plugs

MLA

“spark plugs.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/spark%20plugs. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “spark plugs,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/spark%20plugs.

Source: spark plugs on Wiktionary, CC BY-SA 4.0.