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[kee-loid] /ˈki lɔɪd/
noun, Pathology
an abnormal proliferation of scar tissue, as on the site of a surgical incision.
Also, cheloid.
1850-55; earlier kel(is) keloid (< Greek kēlís stain, spot) + -oid
Related forms
keloidal, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for keloidal


(pathol) a hard smooth pinkish raised growth of scar tissue at the site of an injury, tending to occur more frequently in dark-skinned races
Derived Forms
keloidal, cheloidal, adjective
Word Origin
C19: from Greek khēlē claw
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for keloidal



also cheloid, 1854, from French kéloïde, from Greek khele "crab claw, talon, cloven hoof" + -oides (see -oid). Related: Keloidal; cheloidal.

Online Etymology Dictionary, © 2010 Douglas Harper
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keloidal in Medicine

keloid ke·loid or che·loid (kē'loid')
A red, raised formation of fibrous scar tissue caused by excessive tissue repair in response to trauma or incision.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Article for keloidal


fibrous tissue overgrowth occurring in scars. Usually only the skin layers are affected in this manner; scars of the mucous membranes or deeper tissues do not form keloids. Keloids are sometimes equated with fibrous tumours, but most pathologists do not consider them to be neoplasms (new growths of physiologically nonfunctional tissue).

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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