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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
According to Stellantis, 70% of current RAM HD buyers opt for the 6.7-liter Cummins inline-six cylinder diesel engine.
—Sam Abuelsamid, Forbes, 7 Jan. 2025
However, the vehicles that ferry our kids to school also tend to be terrible in terms of emissions, due to their aging diesel engines.
—Umair Irfan, Vox, 28 Dec. 2024
There's a diesel engine that offers similar power or for those after further oomph, there's also a 190 bhp option that's mated to a 4WD system.
—Matthew MacConnell, Forbes, 6 Jan. 2025
China’s naval production now includes everything from gas turbine and diesel engines to shipboard weapons, electronic systems, submarines, surface combatants, and unmanned systems.
—Seth G. Jones, Foreign Affairs, 2 Oct. 2024
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Word History
First Known Use
1894, in the meaning defined above
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 Jan. 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
Britannica.com: Encyclopedia article about diesel engine
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