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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.

Jefferies analyst Andrew Tsai suspects the strong performance was partly due to Covid-19 booster sales in the UK.

From Barron's • May 1, 2026

For 12 years, everything was in there: car booster seats for our now high school-age boys, tons of old clothes and shoes, you name it.

From The Wall Street Journal • Apr. 22, 2026

On Sunday, the space company owned by Jeff Bezos successfully reused and recovered a booster for its New Glenn rocket, but the uncrewed mission did not deliver the satellite from the company AST SpaceMobile.

From Barron's • Apr. 20, 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

My grandma never noticed until she went to clean the booster seat one day and ran into all this old food underneath it—mashed potatoes and meatloaf and chicken nuggets and carrots, all this gross stuff.

From "Courage to Soar" by Simone Biles




Vocabulary lists containing booster