keratinize

verb
ke·​ra·​ti·​nize
variants: or British keratinise \ ˈker-​ət-​ə-​ˌnīz , kə-​ˈrat-​ᵊn-​ˌīz \
keratinized or British keratinised; keratinizing or British keratinising

Medical Definition of keratinize 

transitive verb

: to make keratinous tissues keratinized by friction

intransitive verb

: to become keratinous or converted into keratin a keratinizing scar

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