Definition of ethyl in English:

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Pronunciation: /ˈɛθʌɪl/
Pronunciation: /ˈɛθɪl/ Pronunciation: /ˈiːθʌɪl/ Pronunciation: /ˈiːθɪl/


[usually as modifier] Chemistry
Of or denoting the hydrocarbon radical —C2H5, derived from ethane and present in many organic compounds: ethyl acetate an ethyl group
More example sentences
  • Industrially ethanol is now mostly frequently manufactured by the catalytic hydration of ethene or by the hydrolysis of ethyl sulfates.
  • The free radical of the ethyl group is known to exist as an entity in its own right.
  • The authors note, ‘Any of these ethyl esters might be used as an alternative to fossil fuels.’


Mid 19th century: from German, from Äther 'ether' + -yl.

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