Definition of "keratosis" []

• Excessive growth of horny tissue of the skin. (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.

• "But look at this image though, something known as keratosis pylorus."
• "Actinic keratosis can be treated with topical creams and solutions, freezing or a mix of therapies."
• "He sees many patients with a condition known as actinic keratosis—small, rough, raised areas on the skin that can develop into squamous cell carcinoma, a cancer that in turn can spread to internal organs and be life-threatening."