[ lahy-sis ]
/ ˈlaɪ sɪs /
noun, plural ly·ses [lahy-seez]. /ˈlaɪ siz/.
Immunology, Biochemistry. the dissolution or destruction of cells by lysins.
Medicine/Medical. the gradual recession of a disease.Compare crisis (def. 4).
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Origin of lysis
1815–25; <New Latin <Greek lýsis
a loosening, releasing, equivalent to ly-,
variant stem of lȳ́
) to loosen, release + -sis-sis
a combining form with the meaning “breaking down, loosening, decomposition,” used in the formation of compound words: analysis; electrolysis; paralysis.
Origin of -lysis
From Greek; see origin at lysis
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
Example sentences from the Web for lysis
There is evil too inseparable from good (compare Lysis); not always punished here, as good is not always rewarded.
She was extremely clear-headed in her reason, and referred them to the Symposium and the dialogue on Lysis, to prove her point.
Some difference appears to be intended between the characters of the more talkative Menexenus and the reserved and simple Lysis.
This attracted Lysis, who was constantly turning round to look at us—he was evidently wanting to come to us.
noun plural -ses (-siːz)
the destruction or dissolution of cells by the action of a particular lysin
med the gradual reduction in severity of the symptoms of a disease
Word Origin for lysis
C19: New Latin, from Greek, from luein to release
n combining form
indicating a loosening, decomposition, or breaking downelectrolysis; paralysis
Word Origin for -lysis
from Greek, from lusis a loosening; see lysis
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
n. pl. ly•ses (-sēz)
The gradual subsiding of the symptoms of an acute disease; a form of the recovery process.
The dissolution or destruction of cells, such as blood cells or bacteria, as by the action of a specific lysin.
Decomposition; dissolving; disintegration:hydrolysis.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
The disintegration of a cell resulting from destruction of its membrane by a chemical substance, especially an antibody or enzyme.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.