Radius of curvature

Radius of curvature may refer to:

• Radius of curvature (mathematics)
• Radius of curvature (optics)
• Radius of curvature (applications), in geodesy and materials science
• The reciprocal of the curvature, in differential geometry
• Radius, for a sphere (lingo)
• The radius of the osculating circle in differential geometry of curves
• Minimum railway curve radius