Definition of ethyl in English:

ethyl

Syllabification: eth·yl
Pronunciation: /ˈeTHəl
 
/

noun

[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.’

Origin

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

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