• (a.) Of or pertaining to the shoulder and the hyoid bone; as, the omohyoid muscle.
(o″mo-hi´oid) pertaining to the shoulder and the hyoid bone.
O`mo·hy'oid adjective [ Omo- + hyoid .] (Anat.) Of or pertaining to the shoulder and the hyoid bone; as, the omohyoid muscle. 
(muscle) Type: Term Definitions: 1. infrahyoid muscle; formed of two bellies attached to intermediate tendon; origin, by inferior belly from upper border of scapula between superior angle and notch; insertion, by superior belly into hyoid bone; action, depresses hyoid; nerve supply, upper cervical spinal nerves through ansa cervi...Type: Term Pronunciation: ō′mō-hī′oyd Synonyms: omohyoid (muscle)
Greek omos = shoulder; hence, a muscle attached to the scapula and hyoid.