sen·si·tize [ sénssə tz ](past and past participlesen·si·tized, present participlesen·si·tiz·ing, 3rd person present singularsen·si·tiz·es)
transitive verb
Definition:
1. make somebody sensitive: to make somebody sensitive, especially to a situation
2. make somebody allergic: to induce undue sensitivity in somebody to a substance such as a food ingredient or drug so that subsequent exposure to the substance triggers an allergic reaction
3. photog make film sensitive to light: to make a photographic film, plate, or other medium sensitive to light by coating it with an emulsion