/ Dictionary / Index Q quinonimine: Meaning and Definition of Find definitions for: qui•non•i•mine Pronunciation: (kwi-non'u-mēn", -min, -nō'nu-), [key] — n. Chem. a colorless, crystalline compound, CHNO, the parent of the indophenol dyes, derived from quinone. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. quinone diimine quinonoid Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language