Exumbilication is a rare medical term that refers to the formation of a cyst on the navel. The phonetic transcription of the word is /ɛksəmbɪlɪˈkeɪʃən/. It contains 5 syllables, and is spelled with the prefix "ex", meaning "out of", followed by "umbilication", which refers to the umbilical or navel area. Despite being a difficult word to pronounce and remember, exumbilication is an important term to know for healthcare professionals who work with newborns or abdominal surgeries.
Exomphalos.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.