About
The character 烯 is a modern scientific coinage for chemical nomenclature, constructed as a phono-semantic compound. The left-side radical 火 (fire) provides the semantic category, linking it to combustible substances and organic chemistry. The right component, 希 (xī), serves as the phonetic element, indicating its pronunciation. In chemistry, 烯 denotes an alkene, an unsaturated hydrocarbon with at least one carbon-carbon double bond. It forms part of a systematic naming series alongside characters like 烷 (alkane) and 炔 (alkyne) to classify different molecular structures.