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

Derived forms: immunities

Type of: condition, discharge, invulnerability, release, status, waiver

Antonym: susceptibility

Encyclopedia: Immunity, mucosal