contactant allergen
1contactant — Any of a heterogeneous group of allergens that elicit manifestations of delayed hypersensitivity by direct contact with skin or mucosa. * * * con·tac·tant (kən takґtənt) an allergen capable of inducing delayed contact type… …
2contactant — kənˈtaktənt, (ˈ)kän| noun ( s) Etymology: contact (I) + ant : any allergen that produces manifestations of hypersensitivity at the site of contact with the skin or the mucosa * * * /keuhn tak teuhnt/, n. Med. any substance that might induce an… …
3contact — 1. The touching or apposition of two bodies. 2. A person who has been exposed to a contagious disease. [L. con tingo, pp. tactus, to touch, seize, fr. tango, to touch] balancing c. 1. the contacts between upper and lower dentures on the balancing …
