from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Propulsion derived from the rearward expulsion of matter in a jet stream, especially propulsion by jet engines.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Propulsion that is caused by the expulsion of a jet of fluid, especially by a jet engine
- n. The study of devices propelled by jet propulsion
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. propulsion by means of the discharge of a jet of fluid toward the rear
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