1) Lysis 
Cytolysis, or osmotic lysis, occurs when a cell bursts due to an osmotic imbalance that has caused excess water to move into the cell. It occurs in a hypotonic environment, where water moves into the cell by osmosis and causes its volume to increase to the point where the volume exceeds the membrane`s capacity and the cell bursts. The presence of....
Cell lysis. ... (18 Nov 1997) ... 
(si-tol´ә-sis) cell lysis; the destruction of cells by rupture or disintegration of the membrane and loss of cell contents, such as that produced by viruses, antibodies and complement, or by a hypotonic environment. See also cytotoxicity. immune cytolysis cell lysis produced b...
Cell lysis.
Type: Term Pronunciation: sī-tol′i-sis Definitions: 1. The dissolution of a cell.
[n] - pathological breakdown of cells by the destruction of their outer membrane
noun pathological breakdown of cells by the destruction of their outer membrane
the dissolution or degeneration of cells.