nitrogen oxide
3
4.6
- noun
- /ˈnaɪtrədʒən ˈɑksaɪd/
- Specialized
:
óxido de nitrógeno
- Control technologies for nitrogen oxides may also enhance control of mercury emissions.
- nitrogen oxide emissions
- nitrogen oxides (NOx)
- nitrogen oxide from automobiles
The carbon dioxide, carbon monoxide, methane, hydrocarbons and nitrogen oxides start going down.
- The carbon dioxide, carbon monoxide, methane, hydrocarbons and nitrogen oxides start going down.
- Energizing Air control plus ultra fine particle reduced nitrogen oxide and odors air freshener.
Examples
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Along with VOCs, nitrogen oxide is one of the primary components of ozone.
Academic text (1992) -
While smaller, hotter engines have a smaller carbon footprint, they also produce more nitrogen oxides.
Academic text (2009) -
Another major source of excess nitrogen is in nitrogen oxides created from burning coal, oil, and natural gas.
Academic text (2006) -
So less travel means less nitrogen oxide, which means less methane is cleared out from the atmosphere.
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Meeting target reductions for nitrogen oxide and carbon dioxide emissions, however, is likely to prove more difficult.
Academic text (1997) -
Driving cars and petrol and diesel cars leads to the emissions of particulate matters and nitrogen oxide into the air.
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Finally, ethanol use would also increase emissions of nitrogen oxide by X to 15 percent over conventional gasoline.
Academic text (1992) -
Exhaust gas recirculation systems are used to reduce nitrogen oxide emissions by recycling exhaust back to the engine.
Academic text (2009) -
Both countries also took further action to curb nitrogen oxides, principally through reducing motor vehicle emissions.
Academic text (1998) -
The government aims to cut nitrogen oxide emissions from vehicles by implementing stricter regulations.
Surface Forms
Morphology
The meaning is directly compositional: 'nitrogen' (the element) + 'oxide' (a compound formed with oxygen) yields a compound of nitrogen and oxygen. This chemical naming pattern is regular and cross-linguistically similar, so a B1 learner who knows both constituent words can reasonably infer the MWE's meaning.
Etymology
Nitrogen oxide simply names a gas made when nitrogen and oxygen join together and the word oxide shows oxygen is involved. These gases often form when air and fuel burn in car engines, so the name is used for the gases that cause 'air pollution'.