olefins

https://doi.org/10.1351/goldbook.O04281
Acyclic and cyclic @H02889@ having one or more carbon–carbon double bonds, apart from the formal ones in @A00441@ compounds. The class olefins subsumes @A00224@ and cycloalkenes and the corresponding polyenes.
Source:
PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1353 [Terms] [Paper]