immunity in WordNet English dictionary

1. an act exempting someone
   "he was granted immunity from prosecution"
   exemption  immunity  granting immunity 
   
2. the quality of being unaffected by something
   "immunity to criticism"
   immunity 
   
3. the state of not being susceptible
   "unsusceptibility to rust"
   unsusceptibility  immunity 
   
4. (medicine) the condition in which an organism can resist disease
   immunity  resistance