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booster shot
noun
: a supplementary dose of an immunizing agent administered as an injection
called also booster, booster dose
Examples of booster shot in a Sentence
He had to get two booster shots at his latest checkup.
Recent Examples on the Web
The booster shot is meant to top-up immunity for people most vulnerable to infection before a new round of COVID vaccines roll out this fall.
—Claire Bugos, Verywell Health, 11 Mar. 2024
Now, those over 65 should also receive a second booster shot under the new recommendation.
—Irene Wright, Miami Herald, 29 Feb. 2024
See all Example Sentences for booster shot
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'booster shot.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Word History
First Known Use
1944, in the meaning defined above
Dictionary Entries Near booster shot
Cite this Entry
“Booster shot.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/booster%20shot. Accessed 23 May. 2024.
Kids Definition
booster shot
noun
: an extra dose of an immunizing agent given to maintain or restore the effects of previously established immunity
Medical Definition
booster shot
noun
: a supplementary dose of an immunizing agent administered as an injection
… the state is requiring older children to have additional booster shots for measles, mumps and rubella.—Ann Schrader, The Denver Post
see booster, booster dose
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