Radius

The word radius (Latin for "wheel spoke"; plural radii, pronounced ray-dee-eye) has several meanings in English:

In classical geometry, a radius of a circle or sphere is any line segment with one endpoint on the circle (i.e., the circular boundary) and the other at the center of the circle. By extension, the radius of a circle or sphere is the length of any such segment.

more generally — in geometry, engineering, graph theory, and many other contexts — the radius of something (e.g. a cylinder, a graph, or a mechanical part) is the distance from its center or axis to its outermost points. See also diameter.

In anatomy, the radius is one of the two bones of the forearm: see radius (bone).

RADIUS is a remote access and dial-in protocol.
Radius Fidonet mailer is an Argus successor.

This is a disambiguation page; that is, one that points to other pages that might otherwise have the same name. If you followed a link here, you might want to go back and fix that link to point to the appropriate specific page.


View Live Article	This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License