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Full Text. The hyoid bone is a horseshoe shaped bone found in the neck. Located anteriorly between the mandible and the thyroid cartilage, the hyoid bone protects the esophagus and also facilitates the wide range of muscle activity required for speaking and swallowing. It is visible upon extension of the neck.
â¢ HYOID (noun). The noun HYOID has 1 sense: 1. a U-shaped bone at the base of the tongue that supports the tongue muscles. Familiarity information: HYOID used as a noun is very rare.â¢ HYOID (adjective). The adjective HYOID has 1 sense: 1. of or relating to the hyoid bone. Familiarity information: HYOID used as an adjective is very rare.amiliarity information: HYOID used as a noun is very rare. â¢ HYOID (adjective). The adjective HYOID has 1 sense: 1. of or relating to the hyoid bone. Familiarity information: HYOID used as an adjective is very rare.