/ Dictionary / Index S sclerotin: Meaning and Definition of Find definitions for: scle•ro•tin Pronunciation: (sklēr'u-tin, skler'-), [key] — n. Biochem. an insoluble protein that serves to stiffen the chitin of the cuticle of arthropods. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sclerotic sclerotitis Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language