SULPHUR DIOXIDE

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

A colorless toxic gas (SO2) that occurs in the gases from volcanoes; used in many manufacturing processes and present in industrial emissions; causes acid rain

Synonyms:

sulfur dioxide; sulphur dioxide

Classified under:

Nouns denoting substances

Hypernyms ("sulphur dioxide" is a kind of...):

dioxide (an oxide containing two atoms of oxygen in the molecule)

pollutant (waste matter that contaminates the water or air or soil)

gas (a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely)

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