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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

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

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

“You know you refused to sit in a booster seat?”

From "Anger Is a Gift" by Mark Oshiro