keratinizeEnglishOxford New American Dictionarykeratinize /ˈkerətnˌīz, ˈkɛrətnˌaɪz / (British also keratinise) ▸ verb Biology change or become changed into a form containing keratin: [with object] the products of the epidermal line are ultimately keratinized [no object] the cells keratinize under estrogenic action. – DERIVATIVES keratinization /ˌkerəˌt(ə)nəˈzāSH(ə)n, , ˌkɛrəˌt(ə)nəˈzeɪʃ(ə)n , ˌkerətnˌīˈzāSH(ə)n, ˌkɛrətnˌaɪˈzeɪʃ(ə)n / (British also keratinisation) noun– ORIGIN late 19th century : from Greek keratinos ‘horny’ + -ize.