diesel

noun

die·​sel ˈdē-zəl How to pronounce diesel (audio)
-səl
1
2
: a vehicle driven by a diesel engine
3

Examples of diesel in a Sentence

Does your car take diesel or gasoline?
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Last year, average weekly pre-tax fuel prices were 18% higher in Hungary than in the Czech Republic and 10% higher for diesel, the CSD said. Christian Edwards, CNN Money, 16 Feb. 2026 That mix gives users flexibility to run laptops, car fridges, diesel heaters, lighting, and speakers without extra adapters. New Atlas, 15 Feb. 2026 However, Amtrak officials say certain routes could see time savings because the new locomotives can transition between diesel and electric power without requiring engine changes. Deirdre Bardolf, FOXNews.com, 14 Feb. 2026 Meanwhile, Congress has eliminated penalties for noncompliance with those fuel economy rules, essentially giving automakers free rein to focus on large, less-efficient gas and diesel vehicles. Camila Domonoske, NPR, 11 Feb. 2026 See All Example Sentences for diesel

Word History

Etymology

Rudolf Diesel

First Known Use

1894, in the meaning defined at sense 1

Time Traveler
The first known use of diesel was in 1894

Browse Nearby Words

Cite this Entry

“Diesel.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/diesel. Accessed 16 Feb. 2026.

Kids Definition

diesel

noun
die·​sel ˈdē-zəl How to pronounce diesel (audio)
-səl
1
2
: a vehicle (as a truck or train) driven by a diesel engine
3
: a fuel designed for use in diesel engines
Etymology

named for Rudolf Diesel 1858–1913 German engineer

Biographical Definition

Diesel

biographical name

Die·​sel ˈdē-zəl How to pronounce Diesel (audio)
-səl
Rudolf 1858–1913 German mechanical engineer

More from Merriam-Webster on diesel

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