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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
Efficient, long-lasting diesel engines are more attractive to companies hauling goods and transporting large numbers of people.
—Michael Leamy, Discover Magazine, 2 Nov. 2024
The main propulsion diesel engine then shut down after the pumps lost electrical power.
—Michael Dorgan, Fox News, 17 Sep. 2024
Cargo freighters and cruise ships, for instance, are often unable to connect to a port's electrical grid and must instead idle, relying on their onboard generators powered by massive diesel engines, which can lead to significant emissions and pollution.
—Leah Carroll, Newsweek, 1 Nov. 2024
Calvert has introduced bipartisan legislation that would reduce diesel engine emissions and voted to roll back the Biden administration's WOTUS rule.
—Daniel Moore, Axios, 3 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 30 Nov. 2024.
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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