ethanol

noun

eth·​a·​nol ˈe-thə-ˌnȯl How to pronounce ethanol (audio) -ˌnōl How to pronounce ethanol (audio)
 British also  ˈē-
: a colorless volatile flammable liquid C2H5OH that is the intoxicating agent in liquors and is also used as a solvent and in fuel

called also ethyl alcohol, grain alcohol

Examples of ethanol in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The Future Hybrid System features a pre-chamber ignition and supports gasoline, E85 ethanol, M100 methanol, and synthetic fuels, with market introduction targeted for 2027. Kaif Shaikh, Interesting Engineering, 5 Sep. 2025 According to Haschemie, a lab test revealed that the tequila contains ethanol that was not derived from Blue Weber agave, and instead from plants like corn and sugarcane. Jonah Flicker, Robb Report, 5 Sep. 2025 According to the Washoe County Regional Medical Examiner's Office, in October 2023, Reece's death was ruled an accident resulting from acute toxicity due to a combination of cocaine, ethanol (alcohol), and MDMA (commonly known as ecstasy or Molly). Robert Alexander, MSNBC Newsweek, 1 Sep. 2025 The Aquastroke engine runs on a combination of 70% plain water and 30% bio-alcohol (either ethanol or methanol). Jim Vinoski, Forbes.com, 21 Aug. 2025 See All Example Sentences for ethanol

Word History

First Known Use

1892, in the meaning defined above

Time Traveler
The first known use of ethanol was in 1892

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Cite this Entry

“Ethanol.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ethanol. Accessed 10 Sep. 2025.

Kids Definition

ethanol

noun
eth·​a·​nol ˈeth-ə-ˌnȯl How to pronounce ethanol (audio)
-ˌnōl
: a colorless flammable easily evaporated liquid that is used to dissolve things and that is the substance in fermented and distilled liquors that can make one drunk

called also ethyl alcohol, grain alcohol

Medical Definition

ethanol

noun
eth·​a·​nol ˈeth-ə-ˌnȯl How to pronounce ethanol (audio) -ˌnōl How to pronounce ethanol (audio)
: a colorless volatile flammable liquid C2H5OH that is the intoxicating agent in liquors and is also used as a solvent

called also ethyl alcohol, grain alcohol

see alcohol sense 1

More from Merriam-Webster on ethanol

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