Meaning of “vaccine” in the English Dictionary

"vaccine" in American English

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vaccinenoun [ C ]

us /ˈvæk·sin, vækˈsin/

a special substance that you take into your body to prevent a disease, and that contains a weakened or dead form of the disease-causing organism

verb [ T ] us /ˈvæk·səˌneɪt/

Our children have been vaccinated for measles and other childhood diseases.
noun [ C ] us /ˌvæk·səˈneɪ·ʃən/

Most states require all children to receive the vaccination before beginning elementary school.

(Definition of “vaccine” from the Cambridge Academic Content Dictionary © Cambridge University Press)