Radius (disambiguation)

A radius is a straight line from the center to the boundary of a geometric object, especially a circle, sphere, or disk.

Radius may also refer to:

* Any of several concepts closely related to the above, including
** Radius of curvature, a measure of curvature in advanced mathematics
*** Radius, a measure of the curvature of a stringed instrument's fingerboard
** Bend radius or minimum bend radius, the minimum radius one can bend a pipe, tube, sheet, cable or hose without damage
** distance from a point to the center of a polar coordinate system in 2D
** distance from a point to the center of a spherical coordinate system in 3D
** distance from a point to the z-axis of a cylindrical coordinate system in 3D
* Radius (bone), one of the two bones in a forearm
* RADIUS, a network authentication protocol
* Radius (Chrono Cross), a character from the role playing game Chrono Cross
* Radius (computer), a computer hardware firm
* Radius (music ensemble), a musical ensemble specialising in the performance of contemporary classical music

See also

* Bend radius