nitrogen oxide

noun

: any of several oxides of nitrogen most of which are produced in combustion and are considered to be atmospheric pollutants: such as

a

: nitric oxide

b

: nitrogen dioxide

c

: nitrous oxide

Examples of nitrogen oxide in a Sentence

Recent Examples on the Web

The types of turbines SpaceXAI used in Memphis can emit thousands of tons of smog-forming nitrogen oxides per year, according to manufacturers' spec sheets. — Lora Kolodny,jeniece Pettitt, CNBC, 16 July 2026

The turbines could emit over 2,000 tons of smog-forming nitrogen oxides, according to the environmental groups. — Prabhat Ranjan Mishra, Interesting Engineering, 15 July 2026

Heavy-duty trucks are far more polluting than smaller cars and trucks, releasing higher levels of nitrogen oxides (NOx) that can cause shortness of breath and other respiratory problems in the short term. — Bloomberg, Oc Register, 9 July 2026

For example, in 2010 the federal government set new standards for diesel trucks that significantly reduced their nitrogen oxide emissions, one of the pollutants that contributes to ozone. — Jeff Wagner, CBS News, 10 June 2026

Word History

First Known Use

1868, in the meaning defined above

Rhymes for nitrogen oxide

• acetaldehyde
• acetanilide
• arabinoside
• cycloheximide
• cyclophosphamide
• diethylamide
• dinucleotide
• ferricyanide
• ferrocyanide
• glutaraldehyde
• glyceraldehyde
• hydroperoxide

Kids Definition

nitrogen oxide

noun

: any of various oxides of nitrogen: as

a

: nitrogen dioxide

b

: nitrous oxide