# radius of curvature

### noun Mathematics.

the absolute value of the reciprocal of the curvature at a point on a curve.

## Nearby words

radium sulfate, radium therapy, radius, radius of action, radius of convergence, radius of curvature, radius of gyration, radius rod, radius vector, radix, radix point

Compare circle of curvature.

## Origin of radius of curvature

First recorded in 1745–55

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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

## British Dictionary definitions for radius of curvature

## radius of curvature

### noun

the absolute value of the reciprocal of the curvature of a curve at a given point; the radius of a circle the curvature of which is equal to that of the given curve at that pointSee also centre of curvature

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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