[ kar-ee-ol-uh-sis ]
/ ˌkær iˈɒl ə sɪs /

noun Cell Biology.

the dissolution of a cell nucleus.

Origin of karyolysis

First recorded in 1885–90; karyo- + -lysis
Related formskar·y·o·lit·ic [kar-ee-uh-lit-ik] /ˌkær i əˈlɪt ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for karyolysis


/ (ˌkærɪˈɒlɪsɪs) /


cytology the disintegration of a cell nucleus, which occurs on death of the cell
Derived Formskaryolytic (ˌkærɪəˈlɪtɪk), adjective

Word Origin for karyolysis

C20: from Greek, from karyon a nut + -lysis
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for karyolysis


[ kăr′ē-ŏlĭ-sĭs ]


The dissolution of the nucleus of a cell by swelling or necrosis with the loss of its affinity for staining with basic dyes.
Related formskar′y•o•lytic (-ə-lĭtĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.