# convex

## convex

1.
having a surface that is curved or rounded outward. Compare concave ( def 1 ).
2.
Mathematics.
a.
(of a polygon) having all interior angles less than or equal to 180°.
b.
(of a set) having the property that for each pair of points in the set the line joining the points is wholly contained in the set.
noun
3.
a convex surface, part, or thing.

Origin:
1565–75; < Latin convexus equivalent to con- con- + -vexus, perhaps < *wek-sos, derivative of base of vehere to convey, if original sense was “brought together (to a single point)”

convexedness, noun
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World English Dictionary
 convex (ˈkɒnvɛks, kɒnˈvɛks) —adj 1. curving or bulging outwards 2. physics having one or two surfaces curved or ground in the shape of a section of the exterior of a sphere, paraboloid, ellipsoid, etc: a convex lens 3. maths (of a polygon) containing no interior angle greater than 180° —vb 4. (tr) to make convex [C16: from Latin convexus vaulted, rounded] 'convexly —adv

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Etymonline
Word Origin & History

convex
1570s, from M.Fr. convexe, from L. convexus "vaulted, arched," pp. of convehere "to bring together," from com- "together" + vehere "to bring" (see vehicle). Possibly from the idea of vaults carried together to meet at the point of a roof. Related: Convexity (c.1600). Convex lens is from 1822.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

convex con·vex (kŏn'věks', kən-věks')
Having a surface or boundary that curves or bulges outward, as the exterior of a sphere.

con·vex'i·ty n.
The American Heritage® Stedman's Medical Dictionary
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American Heritage
Science Dictionary
 convex   (kŏn'věks')  Pronunciation Key  Curving outward, like the outer boundary of a circle or sphere.
The American Heritage® Science Dictionary
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Example sentences
Shaping the hyperbolic, convex curve of the secondary mirror proved troublesome.
Again, the deeply modeled convex surfaces are backed by smoothed-out flat
planes.
Its ilium is distinctive, being dorsally convex in profile and with a thick
dorsal margin.
They come in nine positive-negative pairs: one with a convex top and a drainage
trough around the rim, the other concave.
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