omphalotomy

from The Collaborative International Dictionary of English v.0.48

Omphalotomy \Om`pha*lot"o*my\, n. [Gr. ?; ? the navel + te`mnein
   to cut: cf. F. omphalotomie.] (Surg.)
   The operation of dividing the navel-string.
   [1913 Webster]