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Related to step rocket: Rocket stage
See multistage rocket.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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|Noun||1.||step rocket - 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|
booster rocket, booster unit, takeoff booster, takeoff rocket, booster - the first stage of a multistage rocket
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