gnathion
/ˈneɪθiˌɑn/
noun
- The lowest point on the midline of the lower jaw, used as a reference point in anatomy and anthropology.
- The anthropologist measured the distance from the gnathion to the nasion.
- The gnathion is an important landmark for orthodontic treatment planning.
- In cephalometric analysis, the gnathion helps determine facial symmetry.