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lysis

1 American  
[lahy-sis] / ˈlaɪ sɪs /

noun

plural

lyses
  1. Immunology, Biochemistry. the dissolution or destruction of cells by lysins.

  2. Medicine/Medical. the gradual recession of a disease.


-lysis 2 American  
  1. a combining form with the meaning “breaking down, loosening, decomposition,” used in the formation of compound words.

    analysis; electrolysis; paralysis.


lysis 1 British  
/ ˈlaɪsɪs /

noun

  1. the destruction or dissolution of cells by the action of a particular lysin

  2. med the gradual reduction in severity of the symptoms of a disease

"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

-lysis 2 British  

combining form

  1. indicating a loosening, decomposition, or breaking down

    electrolysis

    paralysis

"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

lysis Scientific  
/ līsĭs /
  1. The disintegration of a cell resulting from destruction of its membrane by a chemical substance, especially an antibody or enzyme.


Etymology

Origin of lysis1

1815–25; < New Latin < Greek lýsis a loosening, releasing, equivalent to ly-, variant stem of lȳ́ ( ein ) to loosen, release + -sis -sis

Origin of -lysis2

From Greek; lysis

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The paper is titled "Convergent MurJ flippase inhibition by phage lysis proteins."

From Science Daily • Feb. 28, 2026

And then there’s the fourth moment, which is what Jung called the lysis, where the energy of your life wants to go.

From Los Angeles Times • Apr. 3, 2024

The macrophages in the recipient will identify the MHC I molecules on transplanted organ as non-self proteins, causing lysis of transplanted cells.

From Textbooks • Jun. 9, 2022

The natural killer cells in the recipient will identify the MHC I molecules on transplanted organ as non-self proteins, causing lysis of transplanted cells.

From Textbooks • Jun. 9, 2022

The lysis, therefore, occupies usually a longer time than was required by the pyrexia in reaching its maximum.

From A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases by Various