Dictionary

nitrogen dioxide

noun

Definition of NITROGEN DIOXIDE

:  a toxic reddish brown gas NO2 that is a strong oxidizing agent, is produced by combustion (as of fossil fuels), and is an atmospheric pollutant (as in smog)

First Known Use of NITROGEN DIOXIDE

1869

nitrogen dioxide

noun    (Medical Dictionary)

Medical Definition of NITROGEN DIOXIDE

:  a poisonous strongly oxidizing reddish brown gas NO2

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