Define the word Xanthin"Xanthin" gcide "The Collaborative International Dictionary of English v.0.48"
Xanthin \Xan"thin\, n. [Gr. xanqo`s yellow.]
1. same as xanthine.
[1913 Webster]
2. (Chem.) A yellow insoluble coloring matter extracted from
yellow flowers; specifically, the coloring matter of
madder. [Formerly written also xanthein.]
[1913 Webster]
3. (Chem.) One of the gaseous or volatile decomposition
products of the xanthates, and probably identical with
carbon disulphide. [Obs.]
[1913 Webster] Xanthine
"Xanthin" gcide "The Collaborative International Dictionary of English v.0.48"
Xanthine \Xan"thine\, n. Also Xanthin \Xan"thin\ . [Gr. xanqo`s
yellow.] (Physiol. Chem.)
A type of purine obtainable as a white microcrystalline
powder, C5H4O2N4, present in muscle tissue, in the liver,
spleen, pancreas, and other organs, and also in urine (in
small quantities) and some urinary calculi, and in the juices
of certain plants; -- so called because it leaves a yellow
residue when evaporated to dryness with nitric acid. It is
also present in guano. Xanthine is closely related to uric
acid.
[Webster 1913 Suppl.]
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