vaccine
/vækˈsaɪn/noun
A substance, usually given as an injection, that helps the body build protection against a particular disease.
Example sentences
- “The flu vaccine is available at most pharmacies in the fall.”
- “Scientists spent years developing a vaccine against the virus.”
- “Babies get their first vaccine soon after they are born.”
You 'get' or 'receive' a vaccine 'against' or 'for' a disease. The act of giving it is 'vaccination'; informally people say 'shot' or, in Britain, 'jab'.