/ Dictionary / Index R root graft: Meaning and Definition of Find definitions for: root' graft" Pronunciation: [key] the process of grafting a shoot or stem of one plant onto a section of root of another. a plant, commonly a young one, that is the result of root grafting. the natural underground growing together or joining of the roots of nearby plants. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. root field root hair Related Content Daily Word Quiz: sinister Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language