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Definitions

vaccine

[vak-seen, vak-seen, -sin] / vækˈsin, ˈvæk sin, -sɪn /


NOUN
injection
Synonyms






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.

Could a patient sue a doctor who counsels against the measles vaccine in the midst of an outbreak?

From Slate • Mar. 31, 2026

"She regained a lot of mobility and function" after receiving a custom mRNA vaccine along with powerful immunotherapy in December, he said.

From Barron's • Mar. 30, 2026

The "short answer is we don't know for sure" what actually led to the reduction in size of Rosie's biggest tumour, said Pall Thordarson, director of UNSW's RNA institute which created the vaccine.

From Barron's • Mar. 30, 2026

Pharmaceutical giant Pfizer and French vaccine maker Valneva reported positive topline results from their phase three study of a vaccine candidate for Lyme disease.

From The Wall Street Journal • Mar. 27, 2026

Later, it was the vaccine of the Reverend Hall, fetched from the mainland, that guarded the rest of the Ojibwa who had been exposed and who survived the smallpox of 1847.

From "The Birchbark House" by Louise Erdrich