General terms:
* Prominent chin: This is a general term for a chin that sticks out more than average.
* Prognathism: This is a medical term that refers to a jaw that protrudes forward, which can cause a protruding chin.
More specific terms:
* Mandibular prognathism: This is a specific type of prognathism where the lower jaw protrudes forward.
* Maxillary retrognathism: This is a condition where the upper jaw is set back, which can make the lower jaw and chin appear more prominent.
* Class III malocclusion: This is a type of bite where the lower jaw is positioned further forward than the upper jaw.
Other terms:
* "Underbite" is sometimes used informally to describe a protruding chin, though it's technically a term for a specific type of malocclusion.
* "Square chin" can also be used to describe a chin that is prominent and square-shaped.
It's important to note that the term "protruding chin" is not a medical diagnosis. If you are concerned about the appearance of your chin, it's best to consult with a dentist or orthodontist.