/ Dictionary / Index R Rheinhessen: Meaning and Definition of Find definitions for: Rhein•hes•sen Pronunciation: (rīn'hes"un), [key] — n. a former Prussian province, now part of Hesse, Germany. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Rheingold, Das* Rheinland Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language