internal combustion engine

noun

: a heat engine in which the combustion that generates the heat takes place inside the engine proper instead of in a furnace

Examples of internal combustion engine in a Sentence

Recent Examples on the Web
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Instead, Maserati will be focused on refreshing the internal combustion engine MC20, which makes 621 horsepower from its 3.0-liter V-6 engine. Erik Shilling, Robb Report, 7 Mar. 2025 But that’s all comparatively basic mechanics in the internal combustion engine room of AI. Adrian Bridgwater, Forbes, 4 Mar. 2025 Yes, a front trunk, where an internal combustion engine would normally be. Sammy Roth, Los Angeles Times, 20 Feb. 2025 The longer lifespan could alleviate the concerns of prospective buyers who are comparing the financial benefits of an EV to that of an internal combustion engine vehicle, says Simona Onori, an associate professor of energy science and engineering at Stanford and a coauthor of the paper. IEEE Spectrum, 29 Jan. 2025 See All Example Sentences for internal combustion engine

Word History

First Known Use

1884, in the meaning defined above

Time Traveler
The first known use of internal combustion engine was in 1884

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Cite this Entry

“Internal combustion engine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/internal%20combustion%20engine. Accessed 13 Mar. 2025.

Kids Definition

internal combustion engine

noun
: an engine in which the fuel is ignited within the engine cylinder instead of in an external furnace
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