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.
However, the Pernambuco project represents one of the most ambitious attempts yet to move ethanol beyond transportation and into the electricity sector. Kaif Shaikh, Interesting Engineering, 2 June 2026 Corn exports reflect demand for ethanol. Trevor Hughes, USA Today, 31 May 2026 But there is little coherent logic in preserving farm subsidies and ethanol mandates in the agriculture bill while reducing nutritional support for pregnant women and toddlers. Sam Raus, The Orlando Sentinel, 29 May 2026 After that, it was transferred to a 95% ethanol solution for storage, to be catalogued and saved in the collection of the Charles Darwin Research Station on Santa Cruz Island in the Galápagos. Jeffrey Kluger, Time, 25 May 2026 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

Browse Nearby Words

Cite this Entry

“Ethanol.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ethanol. Accessed 5 Jun. 2026.

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

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster