Neutralization definition

noun

(1) Action intended to nullify the effects of some previous action

(2) Action intended to keep a country politically neutral or exclude it from a possible war

"The neutralization of Belgium"

(3) (euphemism) the removal of a threat by killing or destroying it (especially in a covert operation or military operation)

(4) 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