• synonyms


  1. Also convexo-concave. concave on one side and convex on the other.
  2. Optics. pertaining to or noting a lens in which the concave face has a greater degree of curvature than the convex face.
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Origin of concavo-convex

1670–80; < Latin concav(us) + -o- + convex
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for concavo-convex

Historical Examples of concavo-convex

  • When a concavo-convex plate is affixed to the outside of the cubit.

    An Introduction to Entomology: Vol. IV (of 4)

    William Kirby

  • I measured therefore the thickness of this concavo-convex Plate of Glass, and found it every where 1/4 of an Inch precisely.


    Isaac Newton

  • They are neat, moderately thin, concavo-convex disks, with smooth surfaces and rounded edges.

  • Concavo-convex: hollowed out or concave on one surface, rounded or convex on the other; like a small segment of a hollow sphere.

  • Winglets: small, concavo-convex scales, generally fringed at tip, under the base of the elytra in Dytiscidae.

British Dictionary definitions for concavo-convex


  1. having one side concave and the other side convex
  2. (of a lens) having a concave face with greater curvature than the convex faceCompare convexo-concave (def. 2)
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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

concavo-convex in Medicine


  1. Of or being concave on one surface and convex on the opposite surface.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.