nitrogen oxide

/ˌnaɪtrədʒən ˌɑkˈsaɪd/
IPA guide

Other forms: nitrogen oxides

Definitions of nitrogen oxide
  1. noun
    any of several oxides of nitrogen formed by the action of nitric acid on oxidizable materials; present in car exhausts
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    type of:
    pollutant
    waste matter that contaminates the water or air or soil
    oxide
    any compound of oxygen with another element or a radical
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