/ Dictionary / Index R ruthenic: Meaning and Definition of Find definitions for: ru•then•ic Pronunciation: (r-then'ik, -thē'nik), [key] — adj. Chem. containing ruthenium in a higher valence state than the corresponding ruthenious compound. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Ruthenian ruthenious Related Content Daily Word Quiz: illegible Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language