1) Lysis 
Karyolysis (Greek karyon = kernel, seed or nucleus, and lýsis from lýein, to separate) is the complete dissolution of the chromatin of a dying cell due to the enzymatic degradation by endonucleases. The whole cell will eventually stain uniformly with eosin after karyolysis. It is usually preceded by karyorrhexis and occurs mainly as a result of ...
The destruction of a cells nucleus. ... (09 Oct 1997) ... 
(kar″e-ol´ә-sis) dissolution of the nucleus of a cell; see also karyorrhexis. adj., karyolyt´ic., adj.
Type: Term Pronunciation: kar′ē-ol′i-sis Definitions: 1. Destruction of the nucleus of a cell by swelling and loss of affinity of its chromatin for basic dyes.
[n] - disintegration and dissolution of a cell nucleus when a cell dies
the dissolution of a cell nucleus.