definition of
immunity

[1] #1 immunity n. [unsusceptibility] the state of not being susceptible; "unsusceptibility to rust". wn

[2] #2 immunity n. [resistance] (medicine) the condition in which an organism can resist disease. wn

[3] #3 immunity n. the quality of being unaffected by something; "immunity to criticism". wn

[4] #4 immunity n. [exemption, granting immunity] an act exempting someone; "he was granted immunity from prosecution". wn