lysis /lī″sis/ [Gk, lysein, to loosen] , 1. destruction or dissolution of a cell or molecule through the action of a specific agent. Cell lysis is frequently caused by a lysin. −lytic, adj. 2. gradual diminution in the symptoms of a disease. Compare crisis. 3. surgery performed to free adhesions of tissues. See also adhesiotomy. −lyse, v.
