View Anatomy Radius Plural Background. The radius is a long bone in the forearm. (anatomy) the long bone in the forearm, on the side of the thumb.
The radius bone is the lateral bone of the forearm, and is homologous with the tibia of the lower limb.
Despite radius also being an english word, people will always say radii for the plural version. One of the principal longitudinal veins in the anterior portion of the wing of an insect. Some people know that english often uses plurals according to the rules of the language a word came from. It lies laterally and parallel to ulna, the second of the forearm bones.
