Main Entry: pho·to·sen·si·ti·za·tion

Pronunciation: \-ˌsen(t)-s(ə-)tə-ˈzā-shən\

Function: noun

Date: circa 1923

1 : the process of photosensitizing
2 : the condition of being photosensitized; especially : the development of an abnormal capacity to react to sunlight typically by edematous swelling and dermatitis