hyoid arch defined in 1951 yearhyoid arch - hyoid arch;hyoid arch - Visceral arch next behind jaws of vertebrates. Dorsal part forms hyomandibula; ventral part in adult tetrapods forms hyoid bone, usually supporting tongue. Contains facial nerve; and forms many muscles of the face. See also: Placodermi, Spiracle. near hyoid arch in Knolikdefinition of word "hyoid arch" was readed 940 times