from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun An engine that develops thrust by the focused expulsion of matter, especially ignited fuel gases.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun Any engine that generates
thrustby expelling matter, especially hot gases produced by igniting a fuel; either a rocket engineor several types of jet engine.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a jet or rocket engine based on a form of aerodynamic propulsion in which the vehicle emits a high-speed stream
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