/ Dictionary / Index S sclerometer: Meaning and Definition of Find definitions for: scle•rom•e•ter Pronunciation: (skli-rom'i-tur), [key] — n. any instrument for determining with precision the degree of hardness of a substance, esp. a mineral, as by measuring the pressure necessary to pierce or scratch it. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sclerometer (Thesaurus) scleroma sclerophyll 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