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Webster 1913 Edition


Karyokinesis

‖

Kar′y-o-ki-neˊsis

(kărˊĭ-ō̍-kī̍-nē′sĭs)
,
Noun.
[NL., fr. Gr.
κάρυον
a nut, kernel +
κινεῖν
to move.]
1.
(Biol.)
The indirect division of cells in which, prior to division of the cell protoplasm, complicated changes take place in the nucleus, attended with movement of the nuclear fibrils; – opposed to
karyostenosis
. The nucleus becomes enlarged and convoluted, and finally the threads are separated into two groups which ultimately become disconnected and constitute the daughter nuclei. Called also
mitosis
. See
Cell development
, under
Cell
.