retrusion
/rɪˈtruːʒn/Now chiefly Dentistry
noun
The action of putting or moving something back; (Dentistry ) backward movement or position of the jaw, especially the mandible, or teeth.
Origin
Mid 17th century; earliest use found in William Harvey (1578–1657), physician and discoverer of the circulation of the blood. From post-classical Latin retrusion-, retrusio confinement, action of thrusting back from classical Latin retrūs-, past participial stem of retrūdere + -iō.