Etymology of the English word corneous
the English word corneous
derived from the Latin word corneus (horny; made of, belonging to cornel-tree, wood; of horn, made of horn, horn-)
derived from the Latin word cornu (horn; horn; hoof; beak)
derived from the Proto-Indo-European root *ker-
derived from the Classical Latin word cornus (cornel-cherry-tree; cornel wood; javelin)