/ Dictionary / Index X xanthein: Meaning and Definition of Find definitions for: xan•the•in Pronunciation: (zan'thē-in), [key] — n. the part of the coloring matter in yellow flowers that is soluble in water. Cf.(def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Xanthe xanthene Related Content Daily Word Quiz: ontiguous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language