di·​ox·​in | \ (ˌ)dī-ˈäk-sən How to pronounce dioxin (audio) \

Definition of dioxin

: any of several persistent toxic heterocyclic hydrocarbons that occur especially as by-products of various industrial processes (such as pesticide manufacture and papermaking) and waste incineration especially : tcdd

Examples of dioxin in a Sentence

Recent Examples on the Web Even small amounts of dioxin, one of the most poisonous chemicals released by facilities, can cause developmental problems, damage the immune system and lead to cancer. Kathleen Flynn, ProPublica, 2 Nov. 2021 However, dioxin is not one of those chemicals, experts say. Sudiksha Kochi, USA TODAY, 16 Oct. 2021 Pruitt flew to Houston after Hurricane Harvey in September 2017 and visited the notorious San Jacinto Waste Pits Superfund site after EPA divers confirmed that cancer-causing dioxin had leaked into the river during the storm. NBC News, 8 Oct. 2020 Trucks rolling in and out of the nearly 6-acre parcel also tracked dioxin through the neighborhood. NBC News, 1 Oct. 2020 In 1982, Times Beach, Missouri, was made a ghost town after the discovery of massive dioxin contamination tied to the defunct chemical factory in the area. Jasper Craven, The New Republic, 28 June 2021 Hatfield joined up the dots, showing how the two were connected and how dioxin could be transmitted from one generation to the next. New York Times, 16 Mar. 2021 Dangerous emissions such as dioxin and particulate matter sometimes go unreported, and enforcement is often porous, environmentalists say. Beth Gardiner, Wired, 10 Apr. 2021 Nor of people with disabilities in those areas that are consistent with exposure to dioxin. New York Times, 16 Mar. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'dioxin.' 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 dioxin

circa 1919, in the meaning defined above

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The first known use of dioxin was circa 1919

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Last Updated

18 Nov 2021

Cite this Entry

“Dioxin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dioxin. Accessed 1 Dec. 2021.

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More Definitions for dioxin



English Language Learners Definition of dioxin

: a poisonous chemical that is sometimes used in farming and industry


di·​ox·​in | \ (ˈ)dī-ˈäk-sən How to pronounce dioxin (audio) \

Medical Definition of dioxin

: any of several persistent toxic heterocyclic hydrocarbons that occur especially as by-products of various industrial processes (as pesticide manufacture and paper milling) and waste incineration especially : tcdd — see agent orange

More from Merriam-Webster on dioxin

Britannica English: Translation of dioxin for Arabic Speakers

Britannica.com: Encyclopedia article about dioxin


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