About the hip. The top of your femur and part of your pelvic bone meet to form your hip. A broken hip is usually a fracture in the upper portion of your femur, or thigh bone. A joint is a point where two or more bones come together, and the hip is a ball-and-socket joint. The ball is the head of the femur and the socket is the curved part of the pelvic bone, called the acetabulum.
Definition of deuteragonist. 1  1 : the actor taking the part of second importance in a classical Greek drama. 2  2 : a person who serves as a foil to another.
Agonist. Definition. noun, plural: agonists. (pharmacology) A molecule that combines with a receptor on a cell to trigger physiological reaction. An example is an acetylcholine being the agonist that combines with the cholinergic receptor. (histology) A muscle that contracts while another muscle relaxes, e.g. when bending the elbow the biceps are the agonist.