• synonyms


noun Immunology, Biochemistry.
  1. an antibody causing the disintegration of erythrocytes or bacterial cells.
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Origin of lysin

First recorded in 1895–1900; lys- + -in2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for lysin

Historical Examples of lysin

  • The difference is often greater when using weaker solutions than when using stronger dilutions of lysin.

    Alcohol: A Dangerous and Unnecessary Medicine, How and Why

    Martha M. Allen

  • By adding another fractional protein, lysin, the rats were made to thrive.

British Dictionary definitions for lysin


  1. any of a group of antibodies or other agents that cause dissolution of cells against which they are directed
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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

lysin in Medicine


  1. An antibody that is capable of causing the destruction or dissolution of red blood cells, bacteria, or other cellular elements.
  2. A substance that causes lysis.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.