: an alkyl radical CH3CH2− derived from ethane

Examples of ethyl in a Sentence

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The following preferred scent was ethyl butyrate, a fruity, pineapple-like odor. Elizabeth Gamillo, Smithsonian Magazine, 6 Apr. 2022 While each of these forms offer health benefits, ethyl esters have the lowest absorption rate. Amber Smith, Discover Magazine, 4 Apr. 2022 The decadent formula melds coconut cream with fresh okra and macadamia ethyl to protect hair from environmental factors. Grooming Playbook, The Salt Lake Tribune, 26 May 2022 Form Fish oil supplements are available in various forms, the most common being ethyl esters and triglycerides. Lindsay Curtis, Verywell Health, 12 June 2025 See All Example Sentences for ethyl

Word History

Etymology

German Ethyl (now Äthyl), from Äther ether + -yl

First Known Use

1834, in the meaning defined above

Time Traveler
The first known use of ethyl was in 1834

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Cite this Entry

“Ethyl.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ethyl. Accessed 8 Jul. 2026.

Medical Definition

ethyl

noun
eth·​yl
ˈeth-əl, British also ˈē-ˌthīl
: a monovalent hydrocarbon radical C2H5

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