The Collaborative International Dictionary of English v.0.48:

Karyokinetic \Kar`y*o*ki*net"ic\
   (k[a^]r`[i^]*[-o]*k[-i]*n[e^]t"[i^]k), a. (Biol.)
   Of or pertaining to karyokinesis; as, karyokinetic changes of
   cell division.
   [1913 Webster]

WordNet (r) 3.0 (2006):

karyokinetic
    adj 1: of or relating to the division of the nucleus of a cell
           during mitosis or meiosis