Source : Webster's Revised Unabridged Dictionary (1913)

Immune \Im*mune"\, a. [L. immunis. See {Immunity}.]
   Exempt; protected by inoculation. -- {Im*mu"nize}, v. t.

Source : WordNet®

immunize
     v 1: law: grant immunity from prosecution [syn: {immunise}]
     2: perform vaccinations or produce immunity in by inoculation;
        "We vaccinate against scarlet fever"; "The nurse
        vaccinated the children in the school" [syn: {immunise}, {inoculate},
         {vaccinate}]