nitrogen dioxide

American  

noun

Chemistry.

1. a reddish-brown, highly poisonous gas, NO 2 , used as an intermediate in the manufacture of nitric and sulfuric acids, and as a nitrating and oxidizing agent; a major air pollutant from the exhaust of internal combustion engines that are not fitted with pollution control devices.

---

nitrogen dioxide British  

noun

1. a red-brown poisonous irritating gas that, at ordinary temperatures, exists in equilibrium with dinitrogen tetroxide. It is an intermediate in the manufacture of nitric acid, a nitrating agent, and also an oxidizer for rocket fuels. Formula: NO 2

---

Example Sentences

According to the research, switching from gas to electric stoves lowers nitrogen dioxide exposure by more than one quarter nationwide and by about half for people who use their stoves most frequently.

From Science Daily

Satellite measurements showed a distinct rise in nitrogen dioxide, or NO2, across the southeastern Atlantic Ocean.

From Science Daily

Other forms of energy, such as oil and coal, also pose considerable health and safety risks including the emission of air pollution — soot, mercury, nitrogen dioxide and carbon dioxide contributing to climate change.

From Los Angeles Times

A study of Northern California residents last year found carbon monoxide and nitrogen dioxide exposure, largely the product of vehicle emissions, was correlated with risk of tuberculosis.

From Salon

In addition to smoke and soot, the space agency detected large plumes of harmful gases emanating from the wildfires, including lung-irritating nitrogen dioxide and cancer-causing formaldehyde.

From Los Angeles Times