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The process by which squamous epithelial cells in vertebrate animals develop into tough protective layers or structures such as hair, hooves, and the outer layer of skin; the final stage of keratinization.
the process of producing a horn or horny substance
cor•ni•fi•ca•tion(ˌkɔr nə fɪˈkeɪ ʃən)
the formation of a horny layer of skin, or horny skin structures, as hair, nails, or scales, from squamous epithelial cells.
organic change into a hornlike form.See also: Bones