Added 10 October 2026 carcinogen /kɑɹˈsɪnəd͡ʒən/ noun Categories: NatureRare Words noun ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about carcinogen at Wordnik → Where our words come from → Any substance that produces cancer. Related Words: carcinogenesiscancermutagenpotencyinducedcocarcinogencancerogenbiocarcinogengenotoxinoncogenhepatocarcinogencarcinovirus Back to today's word