• synonyms


  1. a river in W Europe, in N France and W Belgium, flowing NE into the Scheldt River at Ghent. 120 miles (195 km) long.
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abbreviation Biochemistry.
  1. lysine.
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  1. a combining form meaning “lysis,” “decomposition,” used in the formation of compound words: lysin.
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Also lysi-, lyso-.
Compare -lysis, -lyze, -lyte1.

Origin of lys-

From Greek; see origin at lysis
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for lys

Contemporary Examples of lys

Historical Examples of lys

  • You do not mean that you are returning to the Lys de France!

    The Suitors of Yvonne

    Raphael Sabatini

  • From my open window I gazed across the street at the Lys de France.

    The Suitors of Yvonne

    Raphael Sabatini

  • This is thought to be due to the quality of the water in the Lys River.

    Commercial Geography

    Jacques W. Redway

  • He was told to hold the line of the Lys if he could, but not to risk a big fight.


    John French, Viscount of Ypres

  • The last male Lys in the direct line was gathered to his fathers.

    The Angel

    Cyril Arthur Edward Ranger Gull

British Dictionary definitions for lys


combining form
  1. a variant of lyso-
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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

lys in Medicine


  1. lysine
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  1. Variant oflyso-
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.