keratoacanthoma
noun
ker·a·to·ac·an·tho·ma
ˌker-ət-ō-ˌak-ˌan-ˈthō-mə 
plural keratoacanthomas also keratoacanthomata
-mət-ə
: a rapidly growing skin tumor that occurs especially in elderly individuals, resembles a carcinoma of squamous epithelial cells but does not spread, and tends to heal spontaneously with some scarring if left untreated
Cite this Entry
“Keratoacanthoma.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/keratoacanthoma. Accessed 31 Oct. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share