sternoclidomastoid

Century Dictionary and Cyclopedia

1. In anatomy, of or belonging to the sternum, the clavicle, and the mastoid process. The sternoclidomastoid muscle arises from the summit of the sternum and the inner section of the clavicle, and is inserted into the mastoid process of the temporal bone. It is also called sternomastoid, mastoideus colli, and nutator capitis. See cut under muscle.
2. n. The sternoclidomastoid muscle.