from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A rocket composed of two or more propulsion units that fire in succession. Also called step rocket.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a rocket having two or more rocket engines (each with its own fuel) that are fired in succession and jettisoned when the fuel is exhausted
Sorry, no etymologies found.