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.
The vibrations must be compressed into a much smaller area. This is accomplished by a sequence of three small bones in the middle ear, known collectively as ossicles (Figure 3). The ossicles are the smallest bones in the body (the smallest bone weighs .0001 ounces (0.3 cg)). They are the only bones that never grow larger from the time of birth.