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curvature

[kur-vuh-cher, -choo r] /ˈkɜr və tʃər, -ˌtʃʊər/
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.
  1. (at a point on a curve) the derivative of the inclination of the tangent with respect to arc length.
  2. the absolute value of this derivative.
5.
something curved.
Origin of curvature
late Middle English
1375-1425
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. 2015.
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British Dictionary definitions for curvature

curvature

/ˈkɜːvətʃə/
noun
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) 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 See also radius of curvature, centre of curvature
4.
the act of curving or the state or degree of being curved or bent
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for curvature
n.

1660s, from Latin curvatura "a bending," from curvatus, past participle of curvare "to bend" (see curve (v.)). In non-Euclidian geometry, from 1873.

Online Etymology Dictionary, © 2010 Douglas Harper
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curvature in Medicine

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

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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