/ Dictionary / Index R rhodonite: Meaning and Definition of Find definitions for: rho•do•nite Pronunciation: (rōd'n-īt"), [key] — n. a mineral, manganese metasilicate, MnSiO, occurring usually in rose-red masses, sometimes used as an ornamental stone; manganese spar. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: rhodonite (Thesaurus) rhodomontade Rhodope Related Content Daily Word Quiz: miscreant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language