/ Dictionary / Index X xerosis: Meaning and Definition of Find definitions for: xe•ro•sis Pronunciation: (zi-rō'sis), [key] — n. Med. abnormal dryness, as of the eye or skin. normal sclerosis of the tissue in an aged person. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. xerosere xerostomia Related Content Daily Word Quiz: diaphanous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language