from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Below the hyoid bone in the neck; applied to a group of four pairs of muscles in the anterior part of the neck.
from the GNU version of the Collaborative International Dictionary of English
- adj. Same as hyosternal (a).
from The Century Dictionary and Cyclopedia
- Situated below the hyoid bone: specifically applied in human anatomy to a region of the front of the neck, and to a group of muscles in this region, as the sternohyoid, sternothyroid, thyrohyoid, and omohyoid, collectively known as depressors of the os hyoides: opposed to suprahyoid.
infra- + hyoid (Wiktionary)