GNU Collaborative International Dictionary of English

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Found one definition

1.       
   Hydrolysis (?), n.  [Hydro-, 1 + -lysis.] (Chem.) A chemical process causing the splitting of a chemical bond by the addition of the elements of water.  “hydrolysis of the ester bonds of fats during saponification”.
   
   [Webster 1913 Suppl. +PJC]