booster unit

(redirected from B unit)
Also found in: Thesaurus, Wikipedia.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.booster unit - the first stage of a multistage rocketbooster unit - the first stage of a multistage rocket
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
rocket engine, rocket - a jet engine containing its own propellant and driven by reaction propulsion