adj :  capable of destroying or eating away organic tissue and esp. animal tissue by chemical action <silver nitrate and sulfuric acid are agents>  caus*ti*cal*ly adv caus*tic*i*ty n pl  -ties  
n :  a caustic agent: as  a  :  a substance that burns or destroys organic tissue by chemical action  :  ESCHAROTIC  b  :  SODIUM HYDROXIDE .
 
 
 
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