Thesaurus.com
Dictionary.com
Showing results for booster.
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.

Those include a redesigned propellant system on its booster and improved Raptor engines.

From The Wall Street Journal • Apr. 4, 2026

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

Generally, it takes a couple of weeks to get the fullest protection from a vaccine and some require booster doses.

From BBC • Mar. 17, 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

Connor is still fiddling with the buckles attached to his booster seat, the straps across his chest; I can tell he wants to get out, to find some way to help.

From "The Sea in Winter" by Christine Day