Radial: A word with diverse meanings in medicine and the biomedical sciences: 1  Pertaining to the radius, the smaller bone in the forearm. 2  The radial artery is so named because of its proximity to the radius. 3  Pertaining to the radius of a circle.
A 3D model of ethyne (acetylene), the simplest alkyne. In organic chemistry, an alkyne is an unsaturated hydrocarbon containing at least one carbonâcarbon triple bond. The simplest acyclic alkynes with only one triple bond and no other functional groups form a homologous series with the general chemical formula CnH2nâ2.
Aliphatic hydrocarbons with one double bond between carbons are called alkenes. They follow the naming convention of the alkanes except that the suffix-ene is used instead of-ane. For alkenes above propene the position of the double bond must be specified in the name.thene is the smallest of the alkene series. More commonly called ethylene, it is an important intermediate in many chemical synthesis processes. Notably, it is used in the manufacture of ethylene glycol for antifreeze.