booster shot

noun

Definition of booster shot 

: 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

For example, it’s recommended that adults receive a Td booster shot every 10 years to protect against tetanus and diphtheria. Trihealth, Cincinnati.com, "Top 5 questions to ask your primary care physician," 16 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'booster shot.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of booster shot

1944, in the meaning defined above

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Phrases Related to booster shot

booster chair

booster cushion

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Time Traveler for booster shot

The first known use of booster shot was in 1944

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More Definitions for booster shot

booster shot

noun

English Language Learners Definition of booster shot

: an extra amount of a substance (called a vaccine) that is injected with a needle into a person or animal to help protect against a particular disease

booster shot

noun

Medical Definition of booster shot 

: 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, 22 July 1997 — see booster, booster dose

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