immunization
noun🔊/ˌɪmjunaɪˈzeɪʃn/
🔊/ˌɪmjunəˈzeɪʃn/
(British English also immunisation)
[uncountable, countable]the act of protecting a person or an animal from a disease, especially by giving them an injection of a vaccine （尤指通过注射疫苗）使免疫 an immunization programme to prevent epidemics 防止流行病的免疫接种方案