Dictionary.net

• In composition, relating or appertaining to the cornua of the os hyoides, or to the cornea.

1846 - Medical lexicon: a dictionary of medical science
By Robley Dunglison

• comb. form of Greek keras -atos horn, =horn-&-, horny-,& esp. of the cornea.

1919 - The concise Oxford dictionary of current English
By Sir Augustus Henry