sulphur dioxide
noun/ˌsʌlfə daɪˈɒksaɪd/
/ˌsʌlfər daɪˈɑːksaɪd/
(US English sulfur dioxide)
[uncountable] (symbol SO2)
- a poisonous gas with a strong smell, that is used in industry and causes air pollution note at sulphur
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sulphur dioxide