cytolysisPronunciation: /sʌɪˈtɒlɪsɪs/Definition of cytolysis noun [mass noun] Biology the dissolution or disruption of cells, especially by an external agent. Derivatives cytolyticPronunciation: /ˌsʌɪtəˈlɪtɪk/ adjective cytolysis in other Oxford dictionaries Definition of cytolysis in the US English dictionary