rotary engine

noun

1
: any of various engines (such as a turbine) in which power is applied to vanes or similar parts constrained to move in a circular path
2
: a radial engine in which the cylinders revolve about a stationary crankshaft

Examples of rotary engine in a Sentence

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About 10 years ago, a certain French company called Furion paired a twin-rotor, 654cc Wankel rotary engine with a 40-kilowatt electric motor to produce a massive 180 hp and 151 lb-ft (205 Nm) of instant torque on a motorcycle. New Atlas, 4 Mar. 2026 It’s powered by a 175 horsepower 1.3-liter Mazda rotary engine, an oddity within an oddity. Erik Shilling, Robb Report, 16 Sep. 2025 The Tomahawk also seeks to solve some of the weaknesses of the Wankel rotary engine, which was once touted as a competitor to the piston engine. Chris Gallagher, USA TODAY, 6 June 2024 Mazda will focus on improving its rotary engines to run on different carbon-neutral fuels. William Gavin, Quartz, 28 May 2024 See All Example Sentences for rotary engine

Word History

First Known Use

1799, in the meaning defined at sense 1

Time Traveler
The first known use of rotary engine was in 1799

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Cite this Entry

“Rotary engine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rotary%20engine. Accessed 13 Mar. 2026.

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