innominate

A term used in designating many parts otherwise unnamed; as, the innominate artery, a great branch of the arch of the aorta; the innominate vein, a great branch of the superior vena cava. Innominate bone (Anat.), the great bone which makes a lateral half of the pelvis in mammals; hip bone; haunch bone; huckle bone. It is composed of three bones, ilium, ischium, and pubis, consolidated into one in the adult, though separate in the fetus, as also in many adult reptiles and amphibians. -- Innominate contracts (Law), in the Roman law, contracts without a specific name.