/ Dictionary / Index R rutin: Meaning and Definition of Find definitions for: ru•tin Pronunciation: (rt'n), [key] — n. Pharm. a bright yellow or greenish-yellow substance, CHO, obtained chiefly from buckwheat, and used in the treatment of capillary fragility. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. rutile Rutland Related Content Daily Word Quiz: winsome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language