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action intended to nullify the effects of some previous action
action intended to keep a country politically neutral or exclude it from a possible war; "the neutralization of Belgium"
(euphemism) the removal of a threat by killing or destroying it (especially in a covert operation or military operation)
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