Final answer:
The term for a forward protrusion of the sternum is pectus carinatum, also known as pigeon chest. It is a deformity of the chest wall characterized by a protruding sternum.
Step-by-step explanation:
The term for a forward protrusion of the sternum is pectus carinatum, which is also known as pigeon chest. It is a deformity of the chest wall in which the sternum protrudes forward, creating a bowed appearance of the chest. This condition can be caused by a variety of factors, including genetics, certain medical conditions, and postural habits. Treatment options for pectus carinatum may include bracing, physical therapy, or in severe cases, surgery.