from
The Collaborative International Dictionary of English v.0.48
Hyoid \Hy"oid\, a. [Gr. ? fr. the letter [Upsilon] + e'i^dos
form: cf. F. hyo["i]de.]
1. Having the form of an arch, or of the Greek letter upsilon
[[Upsilon]].
[1913 Webster]
2. (Anat.) Of or pertaining to the bony or cartilaginous arch
which supports the tongue. Sometimes applied to the tongue
itself.
[1913 Webster]
{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.
[1913 Webster]