. "03799375-n"^^ . . . . . "103799375"^^ . . "0"^^ . . . "0"^^ . "multistage rocket"^^ . "step rocket"@en-us . "multistage rocket"@en-us . . "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"@en-us .