The mentum is the scientific word for Chin according to...
http://www.medicinenet.com/chin_cheek_and_jaw_implants/glossary.htm
That might be the medical name for chin so I would double check.
The chin is the mentum.
Dolichofacial is the medical term meaning "elongated face."
Genioplasty is the medical term meaning surgical repair of the chin, including cosmetic surgery to improve the chin's appearance.
agnathia
The medical term for a weak chin is "microgenia." This condition can be either congenital or acquired, and it can affect the appearance of the lower face. Treatment options may include surgery or other interventions to improve chin projection.
Supraclavicular is the term for "above the collar bone."Supraclavicular is the term for "above the collar bone" or clavicle.Supraclavicular means pertaining to above the collarbone.
the chin bone is actually the jaw bone and is called the mandible
Syncope is the medical term meaning fainting.
Anacusis is the medical term meaning complete deafness.
Lamina is the medical term meaning layers.
Sensation is the medical term meaning feeling.
Eructation is the medical term meaning burping.eructation
Kyphotic is the medical term meaning humpbacked.