Look up: xanthine

1. 
   Xanthine
   Xanthine is a nitrogenous compound closely allied to uric acid, that occurs in extract of meat and in tea. It forms a colourless powder slightly soluble in water, and yields alloxan and urea on oxidation.
   Found on http://www.encyclo.co.uk/nol.php
   
   
2. 
   xanthine
   [n] - crystalline oxidation product of the metabolism of nucleoproteins
   Found on http://www.webdictionary.co.uk/definitio
   
   
3. 
   Xanthine
   A molecular structure found in many common drugs and products (eg caffeine).
   Found on http://www.vernalis.com/ver/ss/glossary/
   
   
4. 
   Xanthine
   a bronchodilator drug that is used to treat asthma
   Found on http://www.medichecks.com/glossary.cfm?l
   
   
5. 
   Xanthine
   Xanthine: A substance found in caffeine, theobromine, and theophylline and encountered in tea, coffee, and the colas. Chemically, xanthine is a purine. There is a genetic disease of xanthine metabolism, xanthinuria, due to deficiency of an enzyme, xanthine dehydrogenase, needed to process xanthine in the body. Unchecked, xanthinuria can lead to kid ...
   Found on http://www.medterms.com/script/main/art.
   
   
6. 
   xanthine
   (= 2,6-dihydroxypurine) A purine, the starting point for purine degradation. Its methylated derivatives (theophylline, theobromine, caffeine) are potent cAMP phosphodiesterase inhibitors.
   Found on
   
   
7. 
   Xanthine
   Xan'thine noun Also Xan'thin [ Greek xanqo`s yellow.] (Physiol. Chem.) A white microcrystalline nitrogenous compound, C ₅ H ₄ O ₂ N ₄ , 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 i ...
   Found on http://www.encyclo.co.uk/webster/X/1
   
   
8. 
   xanthine
   <biochemistry> A purine, the starting point for purine degradation. Its methylated derivatives (theophylline, theobromine, caffeine) are potent cAMP phosphodiesterase inhibitors. ... (18 Nov 1997) ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
9. 
   xanthine
   noun crystalline oxidation product of the metabolism of nucleoproteins; precursor of uric acid; found in many organs and in urine
   Found on http://wordnet.princeton.edu/perl/webwn?
   
   
10. 
    Xanthine
    `Xanthine` , (3,7-dihydro-purine-2,6-dione), is a purine base found in most body tissues and fluids and in other organisms.
    Found on http://en.wikipedia.org/wiki/Xanthine
    
    
11. 
    xanthine
    (zan´thēn) a purine compound found in most bodily tissues and fluids; it is a precursor of uric acid. Methylated xanthine compounds such as caffeine, theobromine, and theophylline are used for their bronchodilator effects.
    Found on http://www.mercksource.com/pp/us/cns/cns
    
    
12. 
    Xanthine
    • Alt. of Xanthin
    Found on http://thinkexist.com/dictionary/meaning
    
    
13. 
    xanthine
    (from the article `purine`) Uric acid, the first purine derivative to be discovered, was isolated in 1776 from urinary calculi; xanthine was obtained from the same source in ... rare inherited disorder of purine metabolism that results from a deficiency in the enzyme xanthine oxidase. Normally this enzyme breaks down the ... [2 rela...
    Found on http://www.britannica.com/eb/a-z/x/1
    
    
14. 
    xanthine
    oxidation product of guanine and hypoxanthine, precursor of uric acid; occurs in many organs and in the urine, occasionally forming urinary calculi; elevated in molybdenum cofactor deficiency and in xanthinuria.
    Found on