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
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.
Vigna says the plunge into EVs does not mean its internal combustion engine cars will be any less the company’s focus. Phil Wahba, Fortune, 27 Oct. 2025 And as for that new all-electric SUV (codename K1) that’s poised to be bigger than the Cayenne, that car will now be offered with either an internal combustion engine or a hybrid powertrain. Nicole Hoey, Robb Report, 24 Oct. 2025 However, the battery is powered by an internal combustion engine, acting like a generator, running on gasoline. Liam Rappleye, Freep.com, 14 Oct. 2025 There are also weight-distribution advantages from the compact powerplant, along with what Wismann describes as great handling in transitions – the rider doesn't have to battle the gyroscopic resistance of an internal combustion engine's heavier rotating parts. New Atlas, 7 Oct. 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

Browse Nearby Words

Cite this Entry

“Internal combustion engine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/internal%20combustion%20engine. Accessed 4 Nov. 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
Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!