1. 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; [syn: multistage rocket, step rocket]
WordNet (r) 3.0 (2006):
multistage rocket
n 1: 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 [syn: multistage rocket, step
rocket]