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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.

She said walking Captain Crumpet was a "real mood booster, I can't help but smile seeing his happy tail as he trots along".

From BBC • Apr. 5, 2026

College alumni established booster clubs to recruit athletes under the guise of “name, image and likeness,” or NIL, endorsement deals.

From The Wall Street Journal • Mar. 29, 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

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

In 1986, the Shuttle Challenger was destroyed about a minute after liftoff, when a hole burned through the side of a solid rocket booster, causing a gigantic explosion.

From "Flying to the Moon: An Astronaut's Story" by Michael Collins