Source : WordNet®

neutralisation
     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: {neutralization},
           {neutralization reaction}, {neutralisation reaction}]
     2: (euphemism) the removal of a threat by killing or destroying
        it (especially in a covert operation or military
        operation) [syn: {neutralization}]
     3: action intended to keep a country politically neutral or
        exclude it from a possible war; "the neutralization of
        Belgium" [syn: {neutralization}]
     4: action intended to nullify the effects of some previous
        action [syn: {neutralization}, {counteraction}]