Im*mu"nize

from The Collaborative International Dictionary of English v.0.48

Immune \Im*mune"\, a. [L. immunis. See {Immunity}.]
   1. Exempt; protected. -- {Im*mu"nize}, v. t.
      [1913 Webster]

   2. (Med.) Protected from disease due to the action of the
      immune system, especially by having been inoculated
      against or previously exposed to a disease.
      [PJC]

   3. (Med.) Of or pertaining to the immune system or the
      components of the immune system.
      [PJC]

   4. Not responsive; as, immune to suggestion.
      [PJC]