Definition of alkyl in English:

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Pronunciation: /ˈalk(ə)l/


[as modifier] Chemistry
Of or denoting a hydrocarbon radical derived from an alkane by removal of a hydrogen atom.
Example sentences
  • The ethyl group has a greater molecular weight than the smallest alkyl radical which is the methyl group.
  • As the size of the alkyl group increases, i.e. as the number of carbon atoms increases, the water solubility decreases.
  • Subsequently, alkyl hydroperoxides may initiate radical chain reactions and cause membrane destruction.


Late 19th century: German, from Alkohol 'alcohol' + -yl.

For editors and proofreaders

Syllabification: al·kyl

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