Source : Webster's Revised Unabridged Dictionary (1913)

Inoculate \In*oc"u*late\, v. t. [imp. & p. p. {Inoculated}; p.
   pr. & vb. n. {Inoculating},.] [L. inoculatus, p. p. of
   inoculare to ingraft; pref. in- in,on + oculare to furnish
   with eyes, fr. oculus an eye, also, a bud. See {Ocular}.]
   1. To bud; to insert, or graft, as the bud of a tree or plant
      in another tree or plant.

   2. To insert a foreign bud into; as, to inoculate a tree.

   3. (Med.) To communicate a disease to ( a person ) by
      inserting infectious matter in the skin or flesh; as, to
      inoculate a person with the virus of smallpox,rabies, etc.
      See {Vaccinate}.

   4. Fig.: To introduce into the mind; -- used especially of
      harmful ideas or principles; to imbue; as, to inoculate
      one with treason or infidelity.

Source : WordNet®

inoculating
     n : the act of protecting against disease by introducing a
         vaccine into the body to induce immunity; "doctors
         examined the recruits but nurses did the innoculating"
         [syn: {vaccinating}]