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caffeine

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caffeine


  2  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Caffeine  \Caf*fe"ine\,  n.  [Cf.  F.  caf['e]ine.  See  {Coffee}.] 
  (Chem.) 
  A  white,  bitter,  crystallizable  substance,  obtained  from 
  coffee.  It  is  identical  with  the  alkaloid  {theine}  from  tea 
  leaves,  and  with  {guaranine}  from  guarana. 
 
  From  WordNet  r  1.6  [wn]: 
 
  caffeine 
  n  :  a  bitter  alkaloid  found  in  coffee  and  tea  that  is 
  responsible  for  their  stimulating  effects  [syn:  {caffein}] 




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