• synonyms


[adjective kon-veks, kuh n-; noun kon-veks]
See more synonyms for convex on Thesaurus.com
  1. having a surface that is curved or rounded outward.Compare concave(def 1).
  2. Mathematics.
    1. (of a polygon) having all interior angles less than or equal to 180°.
    2. (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.
Show More
  1. a convex surface, part, or thing.
Show More

Origin of convex

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)”
Related formscon·vex·ly, con·vex·ed·ly [kuh n-vek-sid-lee] /kənˈvɛk sɪd li/, adverbcon·vex·ed·ness, nounsub·con·vex, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for convex

bulging, arched, bent, raised, biconvex, bulgy, gibbous, protuberant

Examples from the Web for convex

Contemporary Examples of convex

Historical Examples of convex

British Dictionary definitions for convex


  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, etca convex lens
  3. maths (of a polygon) containing no interior angle greater than 180°
Show More
  1. (tr) to make convex
Show More
Compare concave
Derived Formsconvexly, adverb

Word Origin for convex

C16: from Latin convexus vaulted, rounded
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for convex


1570s, from Middle French convexe, from Latin convexus "vaulted, arched," past participle of convehere "to bring together," from com- "together," or "thoroughly" (see com-) + vehere "to bring" (see vehicle). Possibly from the idea of vaults carried together to meet at the point of a roof. Related: Convexity. Convex lens is from 1822.

Show More
Online Etymology Dictionary, © 2010 Douglas Harper

convex in Medicine


(kŏnvĕks′, kən-vĕks)
  1. Having a surface or boundary that curves or bulges outward, as the exterior of a sphere.
Show More
Related formscon•vexi•ty n.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

convex in Science


  1. Curving outward, like the outer boundary of a circle or sphere.
Show More
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.