diesel engine
noun
: an internal combustion engine in which air is compressed to a temperature sufficiently high to ignite fuel injected into the cylinder where the combustion and expansion actuate a piston
Examples of diesel engine in a Sentence
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The investment will boost output of mtu Series 4000 diesel engines, which are used in backup power systems for data centers and other critical infrastructures.
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Krysta Escobar, CNBC, 15 July 2025
The first two versions of the North American design of this truck were based on diesel engines.
—New Atlas, 31 Dec. 2024
Distinct from biodiesel — but also based on sustainable substances like vegetable oil — renewable diesel should not require any modifications to a diesel engine in order to flow and combust.
—Evan Simko-Bednarski, New York Daily News, 17 June 2025
Burnt-out carriages and diesel engines lie on their sides, casualties of Syria’s 14-year civil war.
—Taylor Luck, Christian Science Monitor, 6 June 2025
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Krysta Escobar, CNBC, 15 July 2025
The first two versions of the North American design of this truck were based on diesel engines.
—New Atlas, 31 Dec. 2024
Distinct from biodiesel — but also based on sustainable substances like vegetable oil — renewable diesel should not require any modifications to a diesel engine in order to flow and combust.
—Evan Simko-Bednarski, New York Daily News, 17 June 2025
Burnt-out carriages and diesel engines lie on their sides, casualties of Syria’s 14-year civil war.
—Taylor Luck, Christian Science Monitor, 6 June 2025
See All Example Sentences for diesel engine
Cite this Entry
“Diesel engine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/diesel%20engine. Accessed 19 Aug. 2025.
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