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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.

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

For older children or adults, a MenB vaccine or booster costs about £220 privately.

From BBC • Apr. 3, 2026

The MenB vaccine is recommended for babies aged eight weeks, followed by a second dose at 12 weeks and a booster at one year.

From BBC • Mar. 18, 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

On Tuesday of state championship week, the regular meeting of the Permian booster club was interrupted by numerous standing ovations.

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