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  • lysis
    lysis
    noun
    the dissolution or destruction of cells by lysins.
  • -lysis
    -lysis
    a combining form with the meaning “breaking down, loosening, decomposition,” used in the formation of compound words.

lysis

1 American  
[lahy-sis] / ˈlaɪ sɪs /

noun

  • lyses
    plural
  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.


Other Word Forms

Noun Inflected Forms

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; see origin at 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.

See Examples For:

A crucial GTA life stage is host cell lysis: the breaking down of a host cell to release DNA-packed GTA particles.

From Science Daily Apr. 17, 2026

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 cell wall is located outside the cell membrane and prevents osmotic lysis.

From Textbooks Jun. 9, 2022

The pneumonia did not end by crisis but by lysis and for weeks he had very little sleep.

From Psychotherapy by James J. (James Joseph) Walsh

Intracellularly, infected cells typically die after the infecting pathogen replicates to a sufficient concentration and lyses the cell, as many viruses do.

From Textbooks Jun. 9, 2022

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