The Collaborative International Dictionary
Omphalotomy
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.
Wiktionary
omphalotomy
n. (context surgery English) The cutting of the umbiliical cord.