geniohyoideus

Century Dictionary and Cyclopedia

1. n. A muscle of the chin and hyoid arising from the genial tubercle of the lower jaw and inserted into the body of the hyoid bone. It is a slender straight muscle lying alongside its fellow, between the mylohyoideus and the geniohyoglossus; its action tends to depress the jaw and elevate the hyoid. Also called geniohyoid.