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

First Known Use of booster shot

1944, in the meaning defined above

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More Definitions for booster shot

booster shot

noun

English Language Learners Definition of booster shot

chiefly US : 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