Relating to the angle or corner of a bone, especially the angle formed at the lower jaw where it bends.
From gonia (Greek 'angle') plus the suffix -al, creating an adjective. Gonial is commonly used in anatomy and anthropology to describe the mandibular angle.
Anthropologists use the gonial angle to identify evolutionary changes—different primate species have differently shaped jaw angles, showing how our ancestors' feeding habits shaped their skulls!
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