Definition of sulphur dioxide in English:

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sulphur dioxide

(also sulfur dioxide)


[mass noun] Chemistry
A colourless pungent toxic gas formed by burning sulphur in air.
  • Chemical formula: SO2.
Example sentences
  • Other trace gases include methane, nitrous oxide, carbon monoxide, sulphur dioxide, and ozone.
  • The District's urban forest improves air quality by removing nitrogen dioxide, sulfur dioxide, carbon monoxide, ozone, and particulate matter.
  • When fossil fuels burn, carbon dioxide, sulfur dioxide, nitrogen oxides, sooty particles, dioxins, and other pollutants are released into the air and water.

For editors and proofreaders

Line breaks: sul|phur di|ox¦ide

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