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caliche

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caliche


  1  definition  found 
 
  From  WordNet  r  1.6  [wn]: 
 
  caliche 
  n  1:  crust  or  layer  of  hard  subsoil  encrusted  with 
  calcium-carbonate  occurring  in  arid  or  semiarid  regions 
  [syn:  {hardpan}] 
  2:  nitrate-bearing  rock  or  gravel  of  the  sodium  nitrate 
  deposits  of  Chile  and  Peru 




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