/ Dictionary / Index X xylidine: Meaning and Definition of Find definitions for: xy•li•dine Pronunciation: (zī'li-dēn", -din, zil'i-), [key] — n. any of six isomeric compounds that have the formula CHN, are derivatives of xylene, and resemble aniline: used in dye manufacture. an oily liquid consisting of a mixture of certain of these compounds, used commercially in making dyes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. xylic acid xylitol Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language