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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
Key Takeaways There is no official recommendation for a summer COVID booster shot.
—Korin Miller, Verywell Health, 5 June 2024
Further increasing the likelihood of infection is the fact that most people who have been vaccinated are far removed from their last COVID-19 booster shot.
—Rong-Gong Lin Ii, Los Angeles Times, 1 July 2024
Even among the highest-risk group, individuals 75 and older, just 36 percent received the booster shot in the fall and winter.
—Leana S. Wen, Washington Post, 4 July 2024
Summer Booster Recommendations As of right now, there are no recommendations for a summer booster shot.
—Korin Miller, Verywell Health, 5 June 2024
See all Example Sentences for booster shot
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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 18 Nov. 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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