Immunity

n. condition of being insusceptible to a disease; exemption, freedom, protection

Immunity may refer to:Immunity (medical), a state of having sufficient biological defenses to avoid infection, disease, or other unwanted biological invasion, and is related to the functions of the immune systemImmunity (legal), conferring a status on a person or body that makes that person or body free from otherwise legal obligations such as, for example, liability for damages or punishment for criminal actsTransactional immunity, referring to the inability of the prosecutor to prosecute a witness in exchange for the witness's testimony, an action referred to as "turning state's evidence"Use immunity, under which the government may not use a witness's grand jury testimony to prosecute that person (but if the state acquires evidence for a crime independent of the testimony, the witness can then be prosecuted)
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Immunity /im·mu·ni·ty/ the condition of being immune; the protection against infectious disease conferred either by the immune response generated by [more]Immunity - Community and Resources

Noun
1. the state of not being susceptible; "unsusceptibility to rust"
(synonym) unsusceptibility
(hypernym) condition, status
(hyponym) exemption, freedom
2. (medicine) the condition in which an organism can resist disease
(synonym) resistance
(hypernym) condition, status
(hyponym) acquired immunity
(classification) medicine, medical specialty
3. the quality of being unaffected by something; "immunity to criticism"
(hypernym) invulnerability
4. an act exempting someone; "he was granted immunity from prosecution"
(synonym) exemption, granting immunity
(hypernym) release, waiver, discharge
(hyponym) fix

(a.)
Freedom; exemption; as, immunity from error.
  

(a.)
Freedom or exemption from any charge, duty, obligation, office, tax, imposition, penalty, or service; a particular privilege; as, the immunities of the free cities of Germany; the immunities of the clergy.