/ Dictionary / Index X xanthous: Meaning and Definition of Find definitions for: xan•thous Pronunciation: (zan'thus), [key] — adj. yellow. yellowish. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: xanthous (Thesaurus) xanthosiderite Xanthus 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