booster rocket

/ˌbustər ˌrɑkət/
IPA guide

Definitions of booster rocket
  1. noun
    the first stage of a multistage rocket
    synonyms: booster, booster unit, takeoff booster, takeoff rocket
    see moresee less
    type of:
    rocket, rocket engine
    a jet engine containing its own propellant and driven by reaction propulsion
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