Definition of "keloid" [ke•loid]
1. A red, raised formation of fibrous scar tissue caused by excessive tissue repair in response to trauma or surgical incision. (noun) American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.