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

Recent Examples on the Web

Mazda employs a compact rotary engine as a dedicated generator in its MX-30 R-EV. — New Atlas, 13 Aug. 2026

Impressively aerodynamic, the Ro 80’s long wheelbase, spacious greenhouse, and elegant shape were enabled by the use of Felix Wankel’s compact rotary engine. — Raphael Orlove, Robb Report, 27 Feb. 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

Executives said Tuesday the company is developing two small rotary engines that can burn different green fuels and be paired with hybrid setups, Automotive News reports. — William Gavin, Quartz, 28 May 2024

Word History

First Known Use

1799, in the meaning defined at sense 1