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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

The charity has a No Plan B for MenB campaign, aiming to introduce an adolescent booster by 2030 and make the vaccine more affordable on the high street.

From BBC • Mar. 26, 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

“God dog could he run!” was the only way Ken Hankins, an independent oil producer who had been born in Odessa in 1933 and was a die-hard Odessa High booster, could possibly describe it.

From "Friday Night Lights: A Town, A Team, And A Dream" by H.G. Bissinger




Vocabulary lists containing booster