English word photocarcinogen comes from English photo- (Light, electromagnetic radiation. Photography.), English carcinogen (A substance or agent that can cause cancer.)

Detailed word origin of photocarcinogen

Dictionary entry	Language	Definition
photo-	English (eng)	Light, electromagnetic radiation. Photography.
carcinogen	English (eng)	A substance or agent that can cause cancer.
photocarcinogen	English (eng)	Any substance that becomes a carcinogen on exposure to light.

Words with the same origin as photocarcinogen