Definition of nitrogen dioxide in English:

nitrogen dioxide

Line breaks: ni¦tro|gen di|ox¦ide

noun

[mass noun] Chemistry
  • A reddish-brown poisonous gas formed when many metals dissolve in nitric acid.
    • Chemical formula: NO2. It usually exists in equilibrium with dinitrogen tetroxide, N2O4
    More example sentences
    • Levels of nitric oxide, nitrogen dioxide and sulphur dioxide remained at a normally low level.
    • Increases in ozone, sulphur dioxide, nitrogen dioxide and carbon monoxide are blamed primarily on the motorist.
    • Free radicals such as nitric oxide and nitrogen dioxide show weak attractions toward magnetic fields - they are called paramagnetic.

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Pronunciation: məˈlôrd
noun
used to address an English nobleman