Meaning of “vaccinate” - Learner’s Dictionary

vaccinate

verb [ T ] uk us /ˈvæksɪneɪt/

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

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

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