/ Dictionary / Index S sclerotium: Meaning and Definition of Find definitions for: scle•ro•ti•um Pronunciation: (skli-rō'shē-um), [key] — pl. -ti•a a vegetative, resting food-storage body in certain higher fungi, composed of a compact mass of hardened mycelia. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sclerotium (Thesaurus) sclerotitis sclerotization 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