Definition of nitrogen dioxide in English:

nitrogen dioxide


  • [mass noun] A reddish-brown poisonous gas formed when many metals dissolve in nitric acid.

    • ‘In these reactions the ozone reacts with nitric oxide to produce nitrogen dioxide.’
    • ‘Increases in ozone, sulphur dioxide, nitrogen dioxide and carbon monoxide are blamed primarily on the motorist.’
    • ‘Nitric oxide and nitrogen dioxide were chemically assayed as nitrite from sorbent tubes by using spectrophotometry.’
    • ‘Free radicals such as nitric oxide and nitrogen dioxide show weak attractions toward magnetic fields - they are called paramagnetic.’
    • ‘Levels of nitric oxide, nitrogen dioxide and sulphur dioxide remained at a normally low level.’


nitrogen dioxide