Source : Webster's Revised Unabridged Dictionary (1913)

Neutralization \Neu`tral*i*za"tion\, n. [Cf. F. neutralisation.]
   1. The act or process of neutralizing, or the state of being
      neutralized.

   2. (Chem.) The act or process by which an acid and a base are
      combined in such proportions that the resulting compound
      is neutral. See {Neutral}, a., 4.

Source : WordNet®

neutralization
     n 1: a chemical reaction in which an acid and a base interact
          with the formation of a salt; with strong acids and
          bases the essential reaction is the combination of
          hydrogen ions with hydroxyl ions to form water [syn: {neutralisation},
           {neutralization reaction}, {neutralisation reaction}]
     2: action intended to keep a country politically neutral or
        exclude it from a possible war; "the neutralization of
        Belgium" [syn: {neutralisation}]
     3: (euphemism) the removal of a threat by killing or destroying
        it (especially in a covert operation or military
        operation) [syn: {neutralisation}]
     4: action intended to nullify the effects of some previous
        action [syn: {neutralisation}, {counteraction}]