sulphur dioxide

British

noun

Systematic name: sulphur(IV) oxide. a colourless soluble pungent gas produced by burning sulphur. It is both an oxidizing and a reducing agent and is used in the manufacture of sulphuric acid, the preservation of a wide range of foodstuffs ( E220 ), bleaching, and disinfecting. Formula: SO 2

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sulphur dioxide

Activists link the complex and its emissions of particulate matter and sulphur dioxide to an estimated 16,530 premature deaths.

From Barron's ● Feb. 19, 2026

Prior to 2020, dirty engine oil produced large amounts of sulphur dioxide, a gas harmful to human health.

From BBC ● Oct. 17, 2025

Pinatubo, the resulting half a degree of global cooling was the result of about 15 million tonnes of sulphur dioxide injected into the stratosphere.

From BBC ● Jul. 20, 2024

This not only releases large amounts of CO2, but also produces toxic gases such as sulphur dioxide.

From Science Daily ● Oct. 20, 2023

Why is it necessary that the fabric be moist in order to be bleached by sulphur dioxide fumes?

From Textiles For Commercial, Industrial, and Domestic Arts Schools; Also Adapted to Those Engaged in Wholesale and Retail Dry Goods, Wool, Cotton, and Dressmaker's Trades by Dooley, William H. (William Henry)

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023