Definitions for keloidˈki lɔɪd
Random House Webster's College Dictionary
an abnormal proliferation of scar tissue, as on the site of a surgical incision.
Origin of keloid:
1850–55; earlier kel(is) keloid (< Gk kēlís stain, spot) + -oid
raised pinkish scar tissue at the site of an injury; results from excessive tissue repair
A hard raised growth of scar tissue at the site of an injury.
Origin: 19th century, from χηλή and -oid.
applied to a variety of tumor forming hard, flat, irregular excrescences upon the skin
a keloid tumor
U.S. National Library of Medicine
A sharply elevated, irregularly shaped, progressively enlarging scar resulting from formation of excessive amounts of collagen in the dermis during connective tissue repair. It is differentiated from a hypertrophic scar (CICATRIX, HYPERTROPHIC) in that the former does not spread to surrounding tissues.