/ Dictionary / Index X xanthophyll: Meaning and Definition of Find definitions for: xan•tho•phyll Pronunciation: (zan'thu-fil), [key] — n. Biochem. lutein (def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: xanthophyll (Thesaurus) xanthoma xanthosiderite 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