benzophenone
noun
ben·zo·phe·none ˌben-zō-fi-ˈnōn 
-ˈfē-ˌnōn
: a colorless crystalline ketone C13H10O used especially as a perfume fixative and in sunscreens
also : a derivative of benzophenone
Example Sentences
Recent Examples on the Web Common allergens include ingredients such as fragrance, benzophenone-UV filters (used in many makeup products that contain sunscreen), and preservatives like lanolin, Dr. Elliott says. 
Jessica Toscano, SELF, 1 Mar. 2019 And some studies have even shown that benzophenones (like the common sunscreen chemical oxybenzone) may possibly lead to fertility issues and cancer. Ning Chao, Marie Claire, 17 May 2017
Jessica Toscano, SELF, 1 Mar. 2019 And some studies have even shown that benzophenones (like the common sunscreen chemical oxybenzone) may possibly lead to fertility issues and cancer. Ning Chao, Marie Claire, 17 May 2017 Word History
Etymology
International Scientific Vocabulary benz- + phen- + -one
First Known Use
1850, in the meaning defined above
Medical Definition
benzophenone
noun
ben·zo·phe·none ˌben-zō-fi-ˈnōn -ˈfē-ˌnōn
-ˈfē-ˌnōn : a colorless crystalline ketone C13H10O used chiefly in perfumery and sunscreens
also : a derivative of benzophenone