Webster's English Dictionary

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mitosis

mi.to.sis \mi--'to--s*s\ \-'to--.se-z\ \-'ta:t-ik\ \-i-k(*-)le-\ n or 
   mi.to.ses [NL, fr. Gk mitos thread] pl  1: cell division in which complex 
   nuclear division usu. involving halving o f chromosomes precedes 
   cytoplasmic fission and which involves typically a series of steps 
   consisting of prophase, metaphase, anaphase, and telophase 2: KARYOKINESIS  
   - mi.tot.ic aj