noun

• Any of the series of unsaturated hydrocarbons containing a triple bond, including acetylene.

  Alkynes have the general formula: CnH₂n₋₂

  ‘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.’

  More example sentences

  • ‘Originally the alkynes were called the acetylenes.’
  • ‘The alkyne functional group is the carbon-carbon triple bond.’
  • ‘By careful use of appropriate conditions and catalysts alkanes can be converted into other hydrocarbons such as the alkenes and alkynes.’
  • ‘The first step is the addition of the proton to the pi bond of the alkene or alkyne, acting as the electron source.’