The medical term for the belly button is which of the following?

The story behind the answer

Umbilicus is the anatomical term for the belly button (navel), the scar where the umbilical cord once connected a fetus to the placenta for nutrient and oxygen exchange. Clinicians use this landmark to describe the “umbilical region” of the abdomen and conditions like umbilical hernias; related vessels (e.g., umbilical vein) share the same root.

By contrast, nares are nostrils, nevus is a mole or birthmark, and Paxillus is a genus of fungi. Memory tip: think “umbilical cord” → “umbilicus.” The belly button is essentially the body’s first scar, and its final shape (the classic “innie” or rarer “outie”) depends on how the cord stump heals after birth.