ac·​et·​al·​de·​hyde | \ ˌa-sə-ˈtal-də-ˌhīd How to pronounce acetaldehyde (audio) \

Definition of acetaldehyde

: a colorless volatile water-soluble liquid aldehyde C2H4O used chiefly in organic synthesis

Examples of acetaldehyde in a Sentence

Recent Examples on the Web However, the Environmental Protection Agency has estimated less than a 1 in 100,000 chance of developing cancer from continuous exposure to acetaldehyde. Dr. Keith Roach, oregonlive, 10 May 2022 Some of these include alcohol and acetaldehyde, both of which are known definite or probable carcinogens. Dr. Keith Roach, oregonlive, 10 May 2022 Fewer drinks, whether over time or in one day, mean less exposure to acetaldehyde and potentially less effect on estrogen. Michele Cohen Marill, Wired, 5 Oct. 2021 In light of that, the FDA this week highlighted a product recall of hand sanitizer products manufactured by Scentsational Soaps & Candles, Inc due to the presence of methanol, benzene, and acetaldehyde. Yoni Heisler, BGR, 30 Apr. 2021 In 1991, the EPA extrapolated from rodents to humans to set the safety limit for acetaldehyde at 9 micrograms per cubic meter of air – similar in volume to a cup of water in an Olympic-size swimming pool. Michael Petroni, The Conversation, 30 Oct. 2020 Using a new, precise chemical-identifying method, the group found evidence of an understudied mercury molecule called alpha-mercuri-acetaldehyde. Theresa Machemer, Smithsonian Magazine, 26 Mar. 2020 Dihydromyricetin appears to work its magic by enhancing alcohol metabolism and reducing its toxic byproduct, acetaldehyde. Daryl Davies, Joshua Silva And Terry David Church, CNN, 27 Dec. 2019 The humble orbs contain the amino acid cysteine, which helps break down acetaldehyde, which is thought to be one of the causes of hangovers. Emily Heil, Washington Post, 30 Dec. 2019 See More

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

First Known Use of acetaldehyde

1857, in the meaning defined above

History and Etymology for acetaldehyde

borrowed from German Acetaldehyd, from acet- acet- + Aldehyd aldehyde

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Time Traveler for acetaldehyde

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The first known use of acetaldehyde was in 1857

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Dictionary Entries Near acetaldehyde



acetaldehyde ammonia

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Statistics for acetaldehyde

Cite this Entry

“Acetaldehyde.” Dictionary, Merriam-Webster, Accessed 26 Sep. 2022.

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More Definitions for acetaldehyde


ac·​et·​al·​de·​hyde | \ ˌas-ə-ˈtal-də-ˌhīd How to pronounce acetaldehyde (audio) \

Medical Definition of acetaldehyde

: a colorless volatile water-soluble liquid aldehyde C2H4O used chiefly in organic synthesis that can cause irritation to mucous membranes

More from Merriam-Webster on acetaldehyde

Nglish: Translation of acetaldehyde for Spanish Speakers Encyclopedia article about acetaldehyde


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