keratinous

adjective
ke·​ra·​ti·​nous | \ kə-ˈrat-ᵊn-əs How to pronounce keratinous (audio) , ˌker-ə-ˈtī-nəs How to pronounce keratinous (audio) \

Medical Definition of keratinous

: composed of or containing keratin : horny keratinous tissue

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