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tanninmore about tannin

tannin


  3  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Tannic  \Tan"nic\,  a. 
  Of  or  pertaining  to  tan;  derived  from  or  resembling,  tan; 
  as  tannic  acid. 
 
  {Tannic  acid}.  (Chem.) 
  a  An  acid  obtained  from  nutgalls  as  a  yellow  amorphous 
  substance,  {C14H10O9},  having  an  astringent  taste,  and 
  forming  with  ferric  salts  a  bluish-black  compound,  which 
  is  the  basis  of  common  ink.  Called  also  {tannin},  and 
  {gallotannic  acid}. 
  b  By  extension,  any  one  of  a  series  of  astringent 
  substances  resembling  tannin  proper,  widely  diffused 
  through  the  vegetable  kingdom,  as  in  oak  bark,  willow, 
  catechu,  tea,  coffee,  etc 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Tannin  \Tan"nin\,  n.  [Cf.  F.  tannin.]  (Chem.) 
  Same  as  {Tannic  acid},  under  {Tannic}. 
 
  From  WordNet  r  1.6  [wn]: 
 
  tannin 
  n  :  any  of  various  complex  phenolic  substances  of  plant  origin; 
  used  in  tanning  and  in  medicine  [syn:  {tannic  acid}] 




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