the GNU version of the Collaborative International Dictionary of English
n. Any substance that produces cancer.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. any substance that produces cancer
Word Usage
"The term carcinogen refers to any substance, radionuclide or radiation that is an agent directly involved in the promotion of cancer or in the ... en. wikipedia.org/wiki/Carcinogens"