Meaning of “vaccinate” - Learner’s Dictionary

vaccinate

verb [ T ] us uk /ˈvæksɪneɪt/

to give someone a vaccine to stop them from getting a disease:

Have you been vaccinated against polio?
vaccination noun [ C, U ] us uk /ˌvæksɪˈneɪʃən/

(Definition of “vaccinate” from the Cambridge Learner’s Dictionary © Cambridge University Press)