Ceratohyal \Cer`a*to*hy"al\, a. [Gr. ke`ras horn + the letter [Upsilon].] (Anat.) Pertaining to the bone, or cartilage, below the epihyal in the hyoid arch. -- n. A ceratohyal bone, or cartilage, which, in man, forms one of the small horns of the hyoid. [1913 Webster]