booster Meaning in the Cambridge English Dictionary Cambridge dictionaries logo

Meaning of “booster” in the English Dictionary

(Definition of booster from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"booster" in American English

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boosternoun [C]

 us   /ˈbu·stər/
  • booster noun [C] (SUPP0RTER)

an ​action or thing that ​improves or ​increases something: Winning this ​game was a ​greatmorale booster for the ​team. A booster is also someone who is an ​enthusiasticsupporter of something.
  • booster noun [C] (ROCKET)

the first ​stage of a ​rocket (= ​objectsent into ​space) that ​pushes it off the ​ground
(Definition of booster from the Cambridge Academic Content Dictionary © Cambridge University Press)
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“booster” in American English

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