Definitions
There is 1 meaning of the phrase
Nitrogen Oxide.
Nitrogen Oxide - as a noun
Any of several oxides of nitrogen formed by the action of nitric acid on oxidizable materials; present in car exhausts
Example Sentences
"The production of nitrogen oxide contributes to smog formation."
"Some vehicles emit nitrogen oxide as a byproduct of combustion."
"Exposure to nitrogen oxide can cause respiratory problems."
"Industrial activities are a major source of nitrogen oxide emissions."
"Efforts are being made to reduce nitrogen oxide emissions from power plants."
