- 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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for xanthin
In the roots three coloring matters are obtained: alizarin and purpurin, which are both red, and xanthin, which is yellow.Rugs: Oriental and Occidental, Antique & Modern
Rosa Belle Holt
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
- any of a group of yellow or orange carotene derivatives that occur in the fruit and flowers of certain plants