Definitions

1. adjective

relating to or situated below the hyoid bone

“The posthyoid muscles are a crucial part of the neck anatomy.”

2. noun

the part of the neck below the hyoid bone

“The posthyoid region is sensitive to touch and pressure.”

3. noun

a region below the hyoid bone, especially in embryonic development

“The posthyoid groove is a narrow passage in the developing embryo.”