IPA: //koʊˈkɑːr.sɪ.nə.dʒən//
KK: /koʊˈkɑːr.sɪ.nə.dʒən/
A substance that does not cause cancer on its own but can increase the risk of cancer when combined with other cancer-causing agents.
Certain chemicals can act as cocarcinogens, enhancing the effects of more potent carcinogens.
Cocarcinogen → It is formed from "co-" (meaning together) and "carcinogen" (from Greek "karkinos", meaning crab, and "genes", meaning born of or produced by). The term refers to a substance that works together with another carcinogen to promote cancer development.
Think of 'together' ('co-') working with a 'cancer-causing substance' ('carcinogen') — that's why cocarcinogen means a substance that acts together with another to cause cancer.