prognathism

/ˈprɑɡnəˌθɪzəm/
noun
  1. A condition in which the jaw or teeth stick out further than normal.
    • Her prognathism was barely noticeable and did not affect her health.
    • Some breeds of dogs, like bulldogs, have a natural prognathism.
    • The dentist explained that his prognathism could be corrected with braces.