English

Definition of immune system noun from the Oxford Advanced Learner's Dictionary

 

immune system

 noun
noun
BrE BrE//ɪˈmjuːn sɪstəm//
 
; NAmE NAmE//ɪˈmjuːn sɪstəm//
 
 
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the system in your body that produces substances to help it fight against infection and disease
See the Oxford Advanced American Dictionary entry: immune system