/ Dictionary / Index G ground substance: Meaning and Definition of Find definitions for: ground' sub"stance Pronunciation: [key] — Biol. Biol. Also calledthe homogeneous substance in which the fibers and cells of connective tissue are embedded. Also calledthe clear portion of the cell cytoplasm; cytosol. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ground stroke groundswell Related Content Daily Word Quiz: jugular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language