n, pl  -mies  1  :  the operation of cutting or crushing the fetal head to effect delivery <fetal craniotomies … performed to save the life of the mother -R. E. Frisch>   2  :  surgical opening of the skull .
 
 
 
Similar sounding terms:  co·run·dum  cra·nio·tome  gra·na·tum 
 
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