sulfur dioxide

noun

Definition of sulfur dioxide

: a heavy pungent toxic gas SO2 that is easily condensed to a colorless liquid, is used especially in making sulfuric acid, in bleaching, as a preservative, and as a refrigerant, and is a major air pollutant especially in industrial areas

Examples of sulfur dioxide in a Sentence

Recent Examples on the Web

In 1991, the volcano Mount Pinatubo erupted in the Philippines, sending millions of tons of ash and sulfur dioxide into the atmosphere. Avery Thompson, Popular Mechanics, "Harvard Scientists Are Really Launching a Sun-Blocking Geoengineering Experiment," 5 Dec. 2018 Officials said Friday morning that lower levels of sulfur dioxide gas and minor amounts of ash are being transported downwind, with small bursts of ash and gas accompanying intermittent explosive activity, KMGB reports. CBS News, "Kilauea volcano eruption: Seismic activity increases, earthquakes strike 5 days in a row," 15 June 2018 The rate of sulfur dioxide gas shooting from the ground fissures tripled, bringing additional air quality concerns. Doyle Rice, USA TODAY, "Lava, acid rain, vog, sulfur dioxide and now 'laze:' New deadly threat emerges from Hawaii volcano," 21 May 2018 Hot steam — and noxious sulfur dioxide gases — have risen from the vents, before magma broke through and splattered into the air. Amy B Wang, Washington Post, "Lava spatter hits Hawaii man and shatters his leg in first known injury from Kilauea volcano," 20 May 2018 The eruptions could have spewed enough sulfur dioxide and carbon dioxide into the air to cause a massive environmental catastrophe that the dinosaurs, and many other species, couldn’t survive. Katherine Long, The Seattle Times, "UW’s new provost plumbs one of Earth’s most fascinating mysteries," 22 Oct. 2018 Microscopic particulate matter, sulfur dioxide, and nitrogen oxides emitted by things like coal plants worsen respiratory conditions as well as heart diseases. Scott K. Johnson, Ars Technica, "This is your brain on air pollution," 30 Aug. 2018 Volcanic gases, pollution and ash could increase along with sulfur dioxide levels downwind of lava fissures. Washington Post, "Hawaii school cleans, but ash still coats desks, floors," 25 May 2018 Volcanic gases, pollution and ash could increase along with sulfur dioxide levels downwind of lava fissures. Jennifer Sinco Kelleher, chicagotribune.com, "Final exams moved to gym as ash fills Hawaii classroom," 25 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sulfur dioxide.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of sulfur dioxide

1869, in the meaning defined above

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Last Updated

7 Jan 2019

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The first known use of sulfur dioxide was in 1869

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More Definitions for sulfur dioxide

sulfur dioxide

noun

English Language Learners Definition of sulfur dioxide

chemistry : a gas that has a strong smell, that is used in many industries, and that contributes to air pollution

sulfur dioxide

noun

Medical Definition of sulfur dioxide

: a heavy pungent toxic gas SO2 that is easily condensed to a colorless liquid, is used especially in making sulfuric acid, in bleaching, as a preservative, and as a refrigerant, and is a major air pollutant especially in industrial areas

More from Merriam-Webster on sulfur dioxide

Britannica.com: Encyclopedia article about sulfur dioxide

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