reaction engine

American  

noun

Aeronautics, Rocketry.

1. an engine that produces power as a reaction to the momentum given to gases ejected from it, as a rocket or jet engine.

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reaction engine British  

noun

1. an engine, such as a jet or rocket engine, that ejects gas at high velocity and develops its thrust from the ensuing reaction

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Etymology

Origin of reaction engine

First recorded in 1865–70

Example Sentences

This also was the invention of Hero, and was a reaction engine, on the principle of the eolipile.

From History of the Conflict Between Religion and Science by Draper, John William

Out of the port they could see the red flare of a reaction engine; the next ship in their sector, speeding forward.

From The Hour of Battle by Krenkel, Roy G.