acetal

noun
ac·​e·​tal | \ ˈa-sə-ˌtal How to pronounce acetal (audio) \

Definition of acetal

: any of various compounds characterized by the grouping C(OR)2 and obtained especially by heating aldehydes or ketones with alcohols

Examples of acetal in a Sentence

Recent Examples on the Web One recent study from Yale University found that vanillin — an extract of the vanilla bean — transforms into chemicals called acetals when aerosolized. NBC News, "What is in a vape? Everything you need to know," 3 Sep. 2019 One recent study from Yale and Duke identified chemicals called acetals in some Juul e-cigarette liquids. Sheila Kaplan, BostonGlobe.com, "Dozens of young people sickened after vaping; physicians are stumped," 15 Aug. 2019 One recent study from Yale University identified chemicals called acetals in some Juul e-cigarette liquids. NBC News, "22 people have been hospitalized with vaping-linked breathing problems. Doctors don't know why.," 13 Aug. 2019 The move comes just days after a Yale analysis identified chemicals called acetals in some flavors of a specific brand of e-cigarette: Juul. Erika Edwards, NBC News, "Federal regulators want more information about chemicals in e-cigarettes," 2 Aug. 2019 Vanillin, which is banned from regular cigarettes but is allowed in e-cigarettes, was found to irritate airways when combined with the acetals in the aerosol, also known as vapor, produced by the Juul, according to Yale. Abigail Brone, courant.com, "Connecticut investigating Juul Labs over health claims, marketing," 31 July 2019

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

1834, in the meaning defined above

History and Etymology for acetal

borrowed from German Acetal, from Latin acētum "vinegar" + German Alkohol alcohol — more at acetic acid

Note: German Acetal was first used by Justus Liebig in the article "Ueber Acetal (Sauerstoffäther), Holzgeist und Essigäther" in Annalen der Pharmacie, 1. Heft, 5. Bd. (1833), p. 30: "Es scheint mir nun, daß der Name Sauerstoffäther von der Zusammensetzung dieses Körpers eine ganz unrichtige Vorstellung gibt, ich werde ihn in der Folge mit Acetal bezeichnen, als aus Alkohol bei der Essigsäurebildung entstanden." ("It now seems to me that the name oxygen ether presents a quite incorrect conception of the composition of this body, and as a consequence I will call it acetal, since it arises from alcohol during the formation of acetic acid.") Liebig modeled the word on earlier coinages of his own such as chloral, these modeled on the word ethal coined by the French chemist Michel Eugène Chevreul (Recherches chimiques sur les corps gras d'origine animale, Paris, 1823, p. 169).

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The first known use of acetal was in 1834

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Cite this Entry

“Acetal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/acetal. Accessed 21 Feb. 2020.

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More Definitions for acetal

acetal

noun
ac·​e·​tal | \ ˈas-ə-ˌtal How to pronounce acetal (audio) \

Medical Definition of acetal

: any of various compounds characterized by the group C(OR)2 and obtained especially by heating aldehydes or ketones with alcohols

More from Merriam-Webster on acetal

Britannica.com: Encyclopedia article about acetal

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