# curvature

## curvature

[kur-vuh-cher, -choor]
noun
1.
the act of curving or the state of being curved.
2.
a curved condition, often abnormal: curvature of the spine.
3.
the degree of curving of a line or surface.
4.
Geometry.
a.
(at a point on a curve) the derivative of the inclination of the tangent with respect to arc length.
b.
the absolute value of this derivative.
5.
something curved.

Origin:
1375–1425; late Middle English < Latin curvātūra, equivalent to curvāt(us) past participle of curvāre to bend, curve + -ūra -ure. See -ate1

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
 curvature (ˈkɜːvətʃə) —n 1. something curved or a curved part of a thing 2. any normal or abnormal curving of a bodily part: curvature of the spine 3. geometry radius of curvature See also centre of curvature the change in inclination of a tangent to a curve over unit length of arc. For a circle or sphere it is the reciprocal of the radius 4. the act of curving or the state or degree of being curved or bent

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Etymonline
Word Origin & History

curvature
1660s, from L. curvatura "bending," from curvare "to bend" (see curve). In non-Euclidian geometry, from 1873
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

curvature cur·va·ture (kûr'və-chur', -chər)
n.
A curving or bending, especially an abnormal one.

The American Heritage® Stedman's Medical Dictionary
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Example sentences
By tweaking the features of the model fish, they could estimate how body
curvature affected range.
Yes, you'll see curvature, but you're not seeing the whole thing.
He got toward the base of the face, still well above the bottom, and rounded
out of the drop as the surface curvature allowed.
The vertebral column has also a slight lateral curvature, the convexity of
which is directed toward the right side.
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