Etymology

hyoid (adj.)

"having the form of the Greek capital letter upsilon" (ϒ), 1811, from French hyoïde (16c.), from Modern Latin hyoides, from Greek hyoeides "shaped like the letter U," from hu "letter U" (in later Greek called upsilon) + -oeides "like" (see -oid).

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Definitions of hyoid
1
hyoid (n.)
a U-shaped bone at the base of the tongue that supports the tongue muscles;
Synonyms: hyoid bone / os hyoideum
2
hyoid (adj.)
of or relating to the hyoid bone;
From wordnet.princeton.edu