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lysis Syllabification: ly·sis
Pronunciation: /ˈlīsis/

Definition of lysis in English:


1 Biology The disintegration of a cell by rupture of the cell wall or membrane.
Example sentences
  • Inhibition of cell wall synthesis by penicillin resulted in disruption of the cell wall and lysis of the cell.
  • Presumably, the shock treatments that elicit bursting disrupt the balance of wall synthesis and lysis responsible for cell wall extension.
  • Apparently cinnamaldehyde blocks mitochondrial respiration and causes lysis of cultured liver cells.
2The gradual decline of disease symptoms.
Example sentences
  • Samples for alkaline elution were kept in ice during irradiation and successive treatments until the lysis step.
  • Hemoglobin measurements at timed intervals, used previously, are somewhat cumbersome and produce a relatively small number of measurements during a lysis time course.


Early 19th century: from Latin, from Greek lusis 'loosening', from luein 'loosen'.

Definition of lysis in:
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