The Collaborative International Dictionary
Hyoid arch
Hyoid \Hy"oid\, a. [Gr. ? fr. the letter [Upsilon] + e'i^dos form: cf. F. hyo["i]de.]
Having the form of an arch, or of the Greek letter upsilon [[Upsilon]].
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(Anat.) Of or pertaining to the bony or cartilaginous arch which supports the tongue. Sometimes applied to the tongue itself.
Hyoid arch (Anat.), the arch of cartilaginous or bony segments, which connects the base of the tongue with either side of the skull.
Hyoid bone (Anat.), the bone in the base of the tongue, the middle part of the hyoid arch.
Wiktionary
hyoid arch
n. (context anatomy English) The second pharyngeal arch, which assists in forming the side and front of the neck.