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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.

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

SpaceX’s Starship is designed to be the most powerful rocket ever built, consisting of a booster that propels a large spacecraft into space.

From The Wall Street Journal • Apr. 4, 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

The MenB vaccine helps protect against meningococcal group B bacteria and is recommended for babies aged eight weeks, followed by a second dose at 12 weeks and a booster at one year.

From BBC • Mar. 16, 2026

"But it's the only booster we have that's big enough. Which brings me to my next point: We only get one shot at this. If we fail, Mark Watney dies."

From "The Martian" by Andy Weir




Vocabulary lists containing booster