Xanthin

Xan'thin noun [ Greek xanqo`s yellow.] 1. (Physiol. Chem.) A crystalline nitrogenous body closely related to both uric acid and hypoxanthin, present in muscle tissue, and occasionally found in the urine and in some urinary calculi. It is also present in guano. So called from the ...
Found on http://www.encyclo.co.uk/webster/X/1

xanthin

1. <physiology> A crystalline nitrogenous body closely related to both uric acid and hypoxanthin, present in muscle tissue, and occasionally found in the urine and in some urinary calculi. It is also present in guano. So called from the yellow colour of certain of its salts (nitrates). ... 2. <chemistry> A yellow insoluble colouring mat...
Found on http://www.encyclo.co.uk/local/20973

Xanthin

• A white microcrystalline nitrogenous compound, 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. Xanthine is......
Found on http://thinkexist.com/dictionary/meaning/xanthin/

Xanthin

Xanthin is an insoluble yellow colouring matter extracted from yellow flowers, and specifically applied to the colouring matter of the madder flower.
Found on http://www.probertencyclopaedia.com/browse/AX.HTM
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