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tanningmore about tanning

tanning


  2  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Tan  \Tan\,  v.  t.  [imp.  &  p.  p.  {Tanned};  p.  pr  &  vb  n. 
  {Tanning}.]  [F.  tanner,  LL  tannare.  See  {Tan},  n.] 
  1.  To  convert  (the  skin  of  an  animal)  into  leather,  as  by 
  usual  process  of  steeping  it  in  an  infusion  of  oak  or  some 
  other  bark,  whereby  it  is  impregnated  with  tannin,  or 
  tannic  acid  (which  exists  in  several  species  of  bark),  and 
  is  thus  rendered  firm,  durable,  and  in  some  degree 
  impervious  to  water. 
 
  Note:  The  essential  result  in  tanning  is  due  to  the  fact  that 
  the  tannins  form  with  gelatins  and  albuminoids,  a 
  series  of  insoluble  compounds  which  constitute  leather. 
  Similar  results  may  be  produced  by  the  use  of  other 
  reagents  in  place  of  tannin,  as  alum,  and  some  acids  or 
  chlorides,  which  are  employed  in  certain  processes  of 
  tanning. 
 
  2.  To  make  brown;  to  imbrown,  as  by  exposure  to  the  rays  of 
  the  sun;  as  to  tan  the  skin. 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Tanning  \Tan"ning\,  n. 
  The  art  or  process  of  converting  skins  into  leather.  See 
  {Tan},  v.  t.,  1. 




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