Karyostenosis \Kar`y*o*ste*no"sis\, n. [NL., fr. Gr. ka`ryon a
nut, kernel + ? a being straitened.] (Biol.)
Direct cell division (in which there is first a simple
division of the nucleus, without any changes in its
structure, followed by division of the protoplasm of the
cell); -- in opposition to {karyokinesis}.
[1913 Webster]