• Webster's Revised Unabridged Dictionary
    • a Infrahyoid (Anat) Same as Hyosternal.
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Century Dictionary and Cyclopedia
    • infrahyoid 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.
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Webster's Revised Unabridged Dictionary
Infra, + hyoid,


In literature:

In animals, as in man, it is called the infrahyoid region.
"Artistic Anatomy of Animals" by Édouard Cuyer