Final answer:
The hip bones are referred to as coxal bones, each consisting of three regions: the ilium, ischium, and pubis, which together form the acetabulum, part of the hip joint.
Step-by-step explanation:
The term commonly used to refer to the hip bones in a more sophisticated or specialized context is coxal bones. Each hip bone is composed of three distinct sections: the ilium, the ischium, and the pubis, which converge to form the acetabulum, a deep, cup-shaped cavity that is part of the hip joint.
The ilium is the fan-shaped, superior region with the prominent iliac crest. The ischium forms the posteroinferior part of the hip bone and supports the body when sitting. Lastly, the pubis represents the anteromedial portion, meeting at the pubic symphysis with the opposite pubis.