Definition of karyokinesis in US English:

karyokinesis

noun

Biology
  • Division of a cell nucleus during mitosis.

    • ‘Additionally, cytokinesis blocked cells are thought to be prone to polyploidization if the gap between the daughter nuclei is very small, resulting in incomplete or absent karyokinesis.’
    • ‘Note that macronuclear karyokinesis and cytokinesis has initiated in rad 51 nulls despite the failure to complete micronuclear mitosis.’
    • ‘But different proportions of mononucleated and binucleated myocytes may be present, and this possibility complicates the distinction between karyokinesis and cytokinesis.’
    • ‘Whether the phenomena of karyokinesis are essentially chemical or not remains to be determined by further investigations.’
    • ‘This analysis showed that rhb1 - D121A mutants arrested as small, round cells without detectable defects in karyokinesis or cytokinesis.’

Origin

Late 19th century: from karyo- ‘cell nucleus’ + Greek kinēsis ‘movement’ (from kinein ‘to move’).

Pronunciation

karyokinesis

/ˌkerēəkəˈnēsəs//ˌkɛriəkəˈnisəs/