der·​mat·​o·​graph | \(ˌ)dərˈmatəˌgraf, ˈdərmətə-\

Definition of dermatograph 

: an instrument for producing markings on the skin: such as

a : a crayon used by surgeons to outline internal organs on the body surface sketch the outline of the liver with a dermatograph on the abdominal skin

b : a crayon used to test for allergies

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History and Etymology for dermatograph

dermat- + -graph

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a nest or breeding place

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