The lowest point of the chin bone in the lower jaw, used as a reference point in anatomy and dentistry.
From Greek 'geneion' (chin), a direct borrowing used in medical and anatomical terminology, especially in measurements and classifications of facial structure.
Your genion is constantly being measured by orthodontists and facial surgeons—it's literally the benchmark point they use to determine if your jaw is proportional, and it shifts throughout your life as your bone density changes with age.
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