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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.

Those include a redesigned propellant system on its booster and improved Raptor engines.

From The Wall Street Journal • Apr. 4, 2026

"But when you look at a player who can create a moment of magic from nothing it's definitely a confidence booster."

From BBC • Mar. 25, 2026

A billionaire booster helps with the public pitch.

From The Wall Street Journal • Mar. 23, 2026

Using a standard booster approach in mice, both vaccine types produced similar antiviral T cell and antibody-producing B cell responses.

From Science Daily • Mar. 17, 2026

"Maurice, can you get Iris on the booster in less than thirteen days?"

From "The Martian" by Andy Weir