World English Dictionary
neutralize or neutralise (ˈnjuːtrəˌlaɪz)
1.  (also intr) to render or become ineffective or neutral by counteracting, mixing, etc; nullify
2.  (also intr) to make or become electrically or chemically neutral
3.  to exclude (a country) from the sphere of warfare or alliances by international agreement: the great powers neutralized Belgium in the 19th century
4.  to render (an army) incapable of further military action
neutralise or neutralise
neutrali'zation or neutralise
neutrali'sation or neutralise
'neutralizer or neutralise
'neutraliser or neutralise

Collins English Dictionary - Complete & Unabridged 10th Edition
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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
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
WordNet® 3.0, © 2006 by Princeton University.
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Example sentences for neutralisation
This was resolved by the neutralisation of the outboard elevons at high speeds.
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