Meaning of “carcinogen” - Learner’s Dictionary

carcinogen

noun [ C ] us uk /kɑːˈsɪnədʒən/

a substance that can cause cancer (= a disease when cells in your body grow in an uncontrolled way)

carcinogenic adjective us uk /ˌkɑːsɪnəʊˈdʒenɪk/

carcinogenic chemicals

(Definition of “carcinogen” from the Cambridge Learner’s Dictionary © Cambridge University Press)