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English definition of “vaccine”

vaccine

noun [C]    /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 vaccinate    /ˈvæk·səˌneɪt/ verb [T] Our children have been vaccinated for measles and other childhood diseases. vaccination    /ˌvæk·səˈneɪ·ʃən/ noun [C] Most states require all children to receive the vaccination before beginning elementary school.
(Definition of vaccine noun from the Cambridge Academic Content Dictionary © Cambridge University Press)
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