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 The US Congress updated and strengthened emission regulations in 1990 and, by 2003, the amount of sulfur dioxide raining down had decreased—by 40 percent in the northeastern US, for instance. Doug Johnson, Ars Technica, 22 July 2022 Natural-gas production is a significant source of methane, carbon dioxide, carbon monoxide, sulfur dioxide, and nitrogen oxide emissions. Wes Siler, Outside Online, 29 Jan. 2021 Smoke stacks for a nickel-refinery spew sulfur dioxide into the environment July 21, 2002, in Norilsk, Russia. NBC News, 28 Nov. 2021 Spewing water vapor, carbon dioxide, and sulfur dioxide into the air, these explosions tore through the Martian surface over a 500-million-year period about 4 billion years ago. David Bressan, Forbes, 18 Sep. 2021 Since 1990, carbon monoxide in the air has decreased by 74%, nitrogen dioxide by 57% and sulfur dioxide by 89%, according to the latest data from the Environmental Protection Agency. Tori B. Powell, CBS News, 22 Apr. 2022 Scientists are working to better understand how the sulfur that’s emitted, mostly as a gas, sulfur dioxide, turns into particles in colder and darker locations. Mark Thiessen, Anchorage Daily News, 24 Mar. 2022 In 1991, Mount Pinatubo erupted in the Philippines, injecting nearly 20 million tons of sulfur dioxide into the sky. Robinson Meyer, The Atlantic, 20 Apr. 2022 Fritzsche doesn’t add anything else to his wines besides a judicious amount of sulfur dioxide. Michael Alberty | For The Oregonian/oregonlive, oregonlive, 12 Apr. 2022 See More

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.

First Known Use of sulfur dioxide

1869, in the meaning defined above

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Time Traveler for sulfur dioxide

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The first known use of sulfur dioxide was in 1869

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Dictionary Entries Near sulfur dioxide

sulfur dichloride

sulfur dioxide

sulfur dye

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Statistics for sulfur dioxide

Last Updated

5 Aug 2022

Cite this Entry

“Sulfur dioxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sulfur%20dioxide. Accessed 13 Aug. 2022.

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More Definitions for sulfur dioxide

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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