from The American Heritage® Dictionary of the English Language, 4th Edition
- n. 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.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A reaction engine that obtains thrust by jet propulsion which forms its jet exclusively from propellant.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a jet engine containing its own propellant and driven by reaction propulsion
Sorry, no etymologies found.
On August 8, 1955, just an instant before Joe Walker was to be dropped in the X-1A, an explosion within its rocket engine rocked the B-29.
Then, just as he was being dropped at altitude above Hidden Hills north of Death Valley across the Nevada line, his rocket engine did not ignite.