Plasmolysis

Plasmolysis is the process in which cells lose water in a hypertonic solution. It is the shrinkage of the cytoplasm and cell surface membrane from the cell wall. If a plant cell is placed in a solution of lower water potential, the molecules of water leave the vacuole by osmosis. The vacuole loses water and becomes smaller. The cell is said to be "plasmolysed".
Etymology.
The term plasmolysis comes from the Latin word "plasma" meaning ‘matrix’ and the Greek word "lysis", meaning ‘loosening’.