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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Both companies had experienced wild success in the decades before the merger with the rise of the internal combustion engine. Alex Kuffner, USA Today, 15 Apr. 2026 However, better than those two and basically any other internal combustion engine is the V12. Jerry Perez, The Drive, 8 Apr. 2026 The burgeoning trend comes even as a large chunk of the legacy car industry pivots back to internal combustion engine (ICE) vehicles. Sam Meredith,michael Wayland, CNBC, 2 Apr. 2026 Gooden ditched his internal combustion engine vehicle over a year ago and said days like these reinforce that decision. ABC News, 10 Mar. 2026 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 19 Apr. 2026.

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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