"Designating a long slender digastric muscle which arises from the upper border of the shoulder blade and passes obliquely along the side and front of the neck to the lower border of the hyoid bone", Mid 19th cent.; earliest use found in George Viner Ellis (1812–1900). From omo- + hyoid, after omohyoideus.[omohyoid etymology, omohyoid origin, 英语词源]