Radius (disambiguation)

Radius is a straight line or distance from the center to the edge of something. It may also refer to:

In anatomy

• Radius (bone), one of the two bones in a forearm

In mathematics and technology

• Radius (graph theory), the minimum distance from a graph's node to the node that is farthest from it
• Radius of curvature, a measure of how gently a curve bends
• Bend radius, the minimum radius one can bend a pipe, tube, sheet, cable or hose without damage
• Radius of convergence (in calculus), the radius of the region where a complex power series converges
• Radius of gyration, the root-mean-square distance from a set of points or masses to a given center
• The radial coordinate in a
  • Polar coordinate system (2D)
  • Cylindrical coordinate system (3D)
  • Spherical coordinate system (3D)
• The inradius or circumradius of a shape

As a name

• RADIUS, a network authentication protocol
• Radius (computer), a computer hardware firm
• Radius (music ensemble), a London music ensemble founded by Tim Benjamin
• Radius (band), a band from Los Angeles, California
• Radius (comics), a superhero in the Marvel Comics universe
• Radius (Chrono Cross), a character in Chrono Cross

See also

• Circle
• Ellipse
• Sphere
• Diameter