ceratohyal

from The Century Dictionary.

• In anatomy, pertaining to or noting certain lateral portions of the hyoid skeletal arch; the smaller and anterior cornu of the hyoid bone in man.
• noun In anatomy:
• noun In mammals, including man, the lesser cornu of the hyoid bone; that by which the bone is slung to the skull, situated at the junction of the greater cornu or thyrohyal with the body of the bone or basihyal. Flower. See cut under skull.
• noun In birds, the corresponding part of the hyoid bone, which, however, does not connect the bone with the skull, and is borne upon the glossohyal, not the basihyal: it is always small, often wanting.
• noun In ornithology, formerly, the bone of the compound hyoid, now known as the epibranchial; that bone which is borne upon the apohyal (of former nomenclature, now the ceratobranchial), and forms the terminal portion of the greater cornu.
• noun In fishes, the chief element of the branchiostegal arch, which bears most of the branchiostegal rays.

from the GNU version of the Collaborative International Dictionary of English.

• adjective (Anat.) Pertaining to the bone, or cartilage, below the epihyal in the hyoid arch.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective anatomy Relating to the bone or cartilage below the epihyal in the hyoid arch.
• noun anatomy A ceratohyal bone or cartilage which, in humans, forms one of the small horns of the hyoid.