To save this word, you'll need to log in.
ker·a·to·ac·an·tho·ma | \ ˌker-ət-ō-ˌak-ˌan-ˈthō-mə 
\
\ plural keratoacanthomas also keratoacanthomata\ -mət-ə \
\Medical Definition of keratoacanthoma
: 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
Comments on keratoacanthoma
What made you want to look up keratoacanthoma? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
Great Scrabble Words—A Quiz
- Which of the following Q-without-U words means the number five in cards or dice?
Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Word Games
- Great Scrabble Words—A Quiz
Words to improve your Scrabble game
Take the quiz - Semantic Drift Quiz
A challenging quiz of changing words.
Take the quiz - Spell It
Can you spell these 10 commonly misspelled words?
Take the quiz - Add Diction
Build a chain of words by adding one letter at a time.
Play the game
Share keratoacanthoma