noun, plural keratoconi [ker-uh-toh-koh-nahy, -nee] . Pathology.
a degenerative condition characterized by conical protrusion of the cornea and irregular astigmatism.

1855–60; kerato- + Latin cōnus cone Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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American Heritage
Medical Dictionary

keratoconus ker·a·to·co·nus (kěr'ə-tō-kō'nəs)
A conical protrusion of the center of the cornea caused by noninflammatory thinning of the stroma and usually affecting both eyes. Also called conical cornea.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
He has an inspiring story, having nearly gone blind after battling keratoconus, a degenerative eye disease.
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