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roccellamore about roccella

roccella


  2  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Orcin  \Or"cin\,  n.  [Etymology  uncertain:  cf  F.  orcine.]  (Chem.) 
  A  colorless  crystalline  substance,  {C6H3.CH3.(OH)2},  which  is 
  obtained  from  certain  lichens  ({Roccella},  {Lecanora},  etc.), 
  also  from  extract  of  aloes,  and  artificially  from  certain 
  derivatives  of  toluene.  It  changes  readily  into  orcein. 
 
  From  WordNet  r  1.6  [wn]: 
 
  roccella 
  n  :  a  source  of  the  dye  archil  and  of  litmus  [syn:  {Roccella 
  tinctoria}] 




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