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[zan-thin] /ˈzæn θɪn/
the part of the coloring matter in yellow flowers that is insoluble in water.
Compare xanthein.
a yellow coloring matter in madder.
Origin of xanthin
1830-40; < French xanthine or < German Xanthin. See xantho-, -in2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for xanthin
Historical Examples
  • In the roots three coloring matters are obtained: alizarin and purpurin, which are both red, and xanthin, which is yellow.

  • The xanthin group is almost without any excitatory action, and its metabolic end products are constant.

    All About Coffee William H. Ukers
  • xanthin and catechol browns are pleasing in appearance, but their effect is less rich than that obtained with potash.

    The Decoration of Leather Georges de Rcy
British Dictionary definitions for xanthin


any of a group of yellow or orange carotene derivatives that occur in the fruit and flowers of certain plants
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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