/ Dictionary / Index K keratosis: Meaning and Definition of Find definitions for: ker•a•to•sis Pronunciation: (ker"u-tō'sis), [key] — pl. -ses any skin disease characterized by a horny growth, as a wart. any horny growth. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: keratosis (Thesaurus) keratose keratotomy Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language