| NOUN | artifact | booster rocket, booster, booster unit, takeoff booster, takeoff rocket | the first stage / stage of a multistage rocket |
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| Meaning | The first stage / stage of a multistage rocket. | |
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| Synonyms | booster, booster unit, takeoff booster, takeoff rocket | |
| Part of | multistage rocket, 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 |
| Broader | rocket, rocket engine | A jet engine containing its own propellant and driven by reaction propulsion |
| Spanish | cohete secundario | |
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