Rocket and Step rocket

Rocket noun - A jet engine containing its own propellant and driven by reaction propulsion.

Step rocket and rocket are semantically related. In some cases you can replace phrase "Step rocket" with "Rocket", this terms are similar.

Nearby Words: rocketed, rocketing, rocketeer, rocketry

Step rocket noun - 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.

Rocket and step rocket are semantically related. You can use "Rocket" instead a noun phrase "Step rocket".