Definition of procarcinogen in US English:

procarcinogen

noun

Medicine
  • A substance that is not directly carcinogenic but can be converted into a carcinogen by metabolic processes in the body.

Origin

1960s. From pro- + carcinogen. Compare earlier procarcinogenic and co-carcinogen.

Pronunciation

procarcinogen

/ˌprəʊkɑːˈsɪnədʒ(ə)n/