NEUTRALISATION
neutralization, neutralisation, counteraction
(noun) action intended to nullify the effects of some previous action
neutralization, neutralisation
(noun) action intended to keep a country politically neutral or exclude it from a possible war; “the neutralization of Belgium”
neutralization, neutralisation
(noun) (euphemism) the removal of a threat by killing or destroying it (especially in a covert operation or military operation)
neutralization, neutralisation, neutralization reaction, neutralisation reaction
(noun) 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
Source: WordNet® 3.1
Etymology
Noun
neutralisation (countable and uncountable, plural neutralisations)
(British spelling) The act of neutralising.
Source: Wiktionary