The Collaborative International Dictionary of English v.0.48:

Embryotomy \Em`bry*ot"o*my\, n. [Gr. 'e`mbryon an embryo +
   te`mnein to cut: cf. F. embryotomie.] (Med.)
   The cutting a fetus into pieces within the womb, so as to
   effect its removal.
   [1913 Webster]