rocket engine definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a reaction engine carrying its liquid fuel and liquid oxidizing agent in separate tanks: the fuel and oxidizer are brought together and ignited in a combustion chamber to create hot, explosive gas that escapes through a nozzle, providing a powerful thrust
rocket engine definition by American Heritage Dictionary
nounThe American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A reaction engine that contains all the substances necessary for its operation and is not dependent on substances such as atmospheric oxygen, drawn from the surrounding medium, and thus is capable of operating in outer space. Also called rocket motor.
rocket engine - Science Definition
An engine used to produce a jet of hot gases to propel a rocket. The jet is produced by combustion of a fuel with other chemicals stored in the rocket. Since they do not rely on the oxygen in the atmosphere for combustion, rocket engines can operate in space. Compare turbojet.
The combination of a mixture of liquid fuel and oxygen in the combustion chamber generates the thrust that propels the rocket.