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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

"AI transforms a 'needle-in-a-haystack' search into a data-driven selection process, drastically shortening the timeframe between diagnosis and vaccine construction," he said.

From Barron's • Mar. 30, 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

Originally used in 16th-century England to describe a new idea in philosophy or religion, the term can be used to define almost anything, from a new sunscreen lotion to an mRNA vaccine.

From The Wall Street Journal • Mar. 28, 2026

The vaccine was explained to the village chief and his wife.

From "Boots on the Ground: America's War in Vietnam" by Elizabeth Partridge