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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 vaccine is given at eight and 12 weeks, with a booster at one year - Emma confirmed Noa-Rose received all of these.

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

The booster involved has already flown 13 missions, and is expected to land on a ship in the Pacific Ocean.

From Los Angeles Times • Mar. 16, 2026

He has been up and down this season, in and out of the team, but this will be a real confidence booster for him and Arsenal.

From BBC • Feb. 23, 2026

By law, children under a certain weight have to ride in the back, strapped into an appropriate car seat or booster.

From "Storm Runners" by Roland Smith