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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.

Even today, there is still no vaccine or specific antiviral therapy available.

From Science Daily • Apr. 6, 2026

"Parents of children born before May 2015 should be aware that their child will not have been routinely offered the MenB vaccine and are encouraged to speak to their GP for advice."

From BBC • Apr. 3, 2026

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

“Polio is a terrible disease! It left children crippled. Killed them. Salk and his group of scientists pioneered a vaccine to prevent it. He even tested it on himself.”

From "The Fourteenth Goldfish" by Jennifer L. Holm