What is the correct definition of gonion?

The term "gonion" refers specifically to the angle of the mandible, which is the area where the lower jawbone (mandible) meets with the ramus, forming a characteristic angle. This anatomical landmark is critical in various fields, including dentistry and maxillofacial surgery. It serves as an important reference point in imaging techniques such as cephalometric analysis, which is used to assess skeletal relationships, facial growth patterns, and treatment planning for orthodontics.

The other options represent related but distinct anatomical features. The point of the jaw describes the anterior part of the mandible, rather than the angle. The articulation of the skull usually refers to joints between cranial bones and is not specific to the mandible. Lastly, the joint of the cervical spine is associated with the vertebral column and does not pertain to the mandible at all. Understanding these distinctions helps in accurately identifying and utilizing anatomical terms in clinical practice.