adjective / noun
umbilical
um-BIL-ih-kul/ʌmbˈɪlɪkʌl/
Associated with the cord connecting fetus and placenta.
The umbilical cord carries oxygen and nutrients to the developing baby.

Etymology
The pieces mean “relating to the navel.” In “umbilical cord,” the adjective identifies the cord by its attachment at the site that becomes the navel.
In context
the placenta is an organ that provides oxygen and nutrients to the baby from the mother's blood the umbilical cord connects the placenta to the baby
More examples
- The ultrasound shows blood flowing through the umbilical cord.
- After birth, the doctor clamps and cuts the umbilical cord.
- An umbilical supplies the diver with air from the surface.
Forms
umbilical · umbilicals
umbilicus noun — The navel, or belly button.