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Definitions

booster

[boo-ster] / ˈbu stər /
NOUN
supporter
Synonyms
Antonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Starship stands some 408 feet tall, with the booster and upper stage stacked on top of one another.

From Barron's • Apr. 26, 2026

SpaceX caught the booster with giant mechanical arms during test 5.

From Barron's • Apr. 26, 2026

The company had previously landed and reused the booster for the smaller New Shepard vehicle primarily used for short space tourism trips.

From MarketWatch • Apr. 20, 2026

The rocket’s upper stage made it to orbit, achieving the flight’s main goal, though the booster wasn’t recaptured for reuse.

From The Wall Street Journal • Apr. 15, 2026

The back seat is cramped with Adam in his booster seat, me in the middle, and Libby’s giant legs sprawling into my space.

From "I Can Make This Promise" by Christine Day




Vocabulary lists containing booster