[kuh n-tak-tuh nt] /kənˈtæk tənt/

noun, Medicine/Medical.
any substance that might induce an allergy by coming in with the skin or a mucous membrane.

contactant con·tac·tant (kən-tāk’tənt)
Any of a group of allergens that elicit manifestations of induced sensitivity by direct contact with the skin or mucosa.


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  • Contact cheilitis

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