rotary engine

noun
|Updated on: 19 Jun 2018

Definition of rotary engine

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

Recent Examples of rotary engine from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'rotary engine.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of rotary engine

1799

in the meaning defined at sense 1

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