Definition of alkyne in English:


Syllabification: al·kyne
Pronunciation: /ˈalˌkīn


  • Any of the series of unsaturated hydrocarbons containing a triple bond, including acetylene.
    • Alkynes have the general formula: CnH2n-2
    More example sentences
    • Alkanes (sometimes called paraffins) have only single bonds, while alkenes (sometimes called olefins) have a carbon-carbon double bond, and alkynes have a carbon-carbon triple bond.
    • Originally the alkynes were called the acetylenes.
    • The alkyne functional group is the carbon-carbon triple bond.


early 20th century: from alkyl + -yne.

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a small amount; a little