Easy as noun A type of engine, such as a rocket engine, that generates propulsion by expelling mass in one direction, which propels the engine itself in the opposite direction, following Newton's third law of motion. Clear All
4 Example Sentences Showcasing the Meaning of 'Reaction Engine'
The rocket's reaction engine ignited, creating a massive thrust for liftoff.
The spaceship's speed was reliant on the power of its reaction engine.
Learning about a reaction engine is part of the science curriculum in seventh grade.
The students conducted an experiment to demonstrate how a reaction engine works.
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