Definition of sensitise

• cause to sense; make sensitive; "She sensitized me with respect to gender differences in this traditional male-dominated society"; "My tongue became sensitized to good wine"
• make sensitive to a drug or allergen; "Long-term exposure to this medicine may sensitize you to the allergen"
• make (a material) sensitive to light, often of a particular colour, by coating it with a photographic emulsion; "sensitize the photographic film"