Meaning of “immune system” in the English Dictionary

british dictionary

"immune system" in British English

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immune systemnoun [ C usually singular ]

uk /ɪˈmjuːn ˌsɪs.təm/ us /ɪˈmjuːn ˌsɪs.təm/

C2 the cells and tissues in the body that make it able to protect itself against infection

(Definition of “immune system” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"immune system" in American English

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immune systemnoun [ C ]

us /ɪˈmjun ˌsɪs·təm/

biology the body's cells and organs that fight illness and disease

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