• synonyms


verb (used with object), pep·to·nized, pep·to·niz·ing.
  1. to subject (food) to an artificial, partial digestion by pepsin or pancreatic extract in order to aid digestion.
  2. to hydrolyze or dissolve by a proteolytic enzyme, as pepsin.
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Also especially British, pep·to·nise.

Origin of peptonize

First recorded in 1875–80; peptone + -ize
Related formspep·to·ni·za·tion, nounpep·to·niz·er, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for peptonize

Historical Examples of peptonize

  • Milk thus prepared quickly spoils, and it is necessary to peptonize it in small quantity and often during the twenty-four hours.

    A System of Practical Medicine By American Authors, Vol. II


  • Attention to the bowels is of great importance in these cases and it may be necessary to peptonize the milk for some time.

British Dictionary definitions for peptonize



  1. (tr) to hydrolyse (a protein) to peptones by enzymic action, esp by pepsin or pancreatic extract
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Derived Formspeptonization or peptonisation, nounpeptonizer or peptoniser, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

peptonize in Medicine


  1. To convert protein into a soluble peptone by enzymatic action.
  2. To dissolve food by means of a proteolytic enzyme.
  3. To combine with peptone.
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Related formspep′to•ni•zation (-nĭ-zāshən) n.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.