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

Recent Examples on the Web
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Adding to the urgency for buying the replacement is that this is the last year for that generation of diesel engine. Doug Ross, Chicago Tribune, 16 Jan. 2025 The Japanese truck and engine manufacturer was charged with fraud in US District Court in Detroit for unlawfully selling 105,000 heavy-duty diesel engines in the United States from 2010 through 2022 that did not meet emissions standards. Reuters, CNN, 16 Jan. 2025 This system comprises twin diesel engines that drive two controllable pitch propellers through individual gearboxes, that are fitted with units for electric propulsion or to generate electrical energy to operate the vessel. Bill Springer, Forbes, 13 Dec. 2024 It gets upgraded with a more powerful 168-hp 2.0-liter diesel engine and nine-speed automatic transmission as standard. New Atlas, 29 Jan. 2025 See all Example Sentences for diesel engine 

Word History

First Known Use

1894, in the meaning defined above

Time Traveler
The first known use of diesel engine was in 1894

Dictionary Entries Near diesel engine

Cite this Entry

“Diesel engine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/diesel%20engine. Accessed 22 Feb. 2025.

Kids Definition

diesel engine

noun
: an internal-combustion engine in which air is compressed to make enough heat to ignite the fuel in the cylinder

More from Merriam-Webster on diesel engine

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