Acyclic (branched or unbranched) and cyclic (with or without side chain) hydrocarbons having one or more carbon–carbon triple bonds.
See also: alkynes
Source:
PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1311 (https://doi.org/10.1351/pac199567081307)