jaw gradation

jaw gra·da·tion

(jaw grā-dā'shŭn)
Controlled vertical mandibular movement during vocalization as a function of length, depth, and amount of muscular contraction.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

jaw gra·da·tion

(jaw grā-dā'shŭn)
Controlled vertical mandibular movement during vocalization as a function of length, depth, and amount of muscular contraction.
Medical Dictionary for the Dental Professions © Farlex 2012