[ker-uh-toh-koh-nuh s]
noun, plural ker·a·to·co·ni [ker-uh-toh-koh-nahy, -nee] /ˌkɛr ə toʊˈkoʊ naɪ, -ni/. Pathology.
  1. a degenerative condition characterized by conical protrusion of the cornea and irregular astigmatism.

Origin of keratoconus

1855–60; kerato- + Latin cōnus cone Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

keratoconus in Medicine


  1. A conical protrusion of the center of the cornea caused by noninflammatory thinning of the stroma and usually affecting both eyes.conical cornea
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.