/ Dictionary / Index R rhizomorphous: Meaning and Definition of Find definitions for: rhi•zo•mor•phous Pronunciation: (rī"zō-môr'fus), [key] — adj. Bot. rootlike in form. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. rhizomorph rhizophagous Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language