from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A cancer-causing substance or agent.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A substance or agent that can cause cancer.

from the GNU version of the Collaborative International Dictionary of English

  • n. Any substance that produces cancer.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. any substance that produces cancer


from Wiktionary, Creative Commons Attribution/Share-Alike License

From carcino- + -gen.


  • 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.

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  • * disclaimer: depending on your use of the term carcinogen and how far you want to take it then yes, all air is carcinogenic and pretty much every item you come in contact with is carcinogenic as well.

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  • The carcinogen is often released by petrochemical plants and rubber and plastics manufacturers.

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  • Hydrocarbons such as benzene, a carcinogen, is a problem with gasoline.

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  • According to Prop. 65, a chemical must be listed if it is formally identified as a carcinogen or reproductive toxicant by an authoritative scientific body.

  • Some have eco-friendly attributes, like wood with low emissions of volatile organic compounds (VOCs), such as formaldehyde, which is classified as a carcinogen by the World Health Organization.

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  • I am not a total bliss ninny - it still pisses me off that a drug- known as a carcinogen- was giving to women trying to protect their pregnancies.


  • With formaldehyde, the degree of risk from chronic exposure is still somewhat uncertain, but it is classified as a carcinogen, and we do want to be sensitive to the fact that people who spend a lot of time in their trailers could be at risk for cumulative exposure effects.

    CNN Transcript Feb 14, 2008

  • If it's a carcinogen or it's classified as a carcinogen, what they're going to need to do and they said they're going to do this, is study these folks because the cancer likely wouldn't show up for years and years.

    CNN Transcript Feb 14, 2008

  • A substance will be classified as a carcinogen even if only one species is affected by a substance.

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  • I always want this word to be about cars instead of cancer.

    November 21, 2008