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Definitions

carcinogen

[kahr-sin-uh-juhn, -jen, kahr-suh-nuh-jen, -noh-] / kɑrˈsɪn ə dʒən, -ˌdʒɛn, ˈkɑr sə nəˌdʒɛn, -noʊ- /
NOUN
cancer-causing agent
Synonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Its active ingredient is glyphosate, which the International Agency for Research on Cancer, a unit of the World Health Organization, identified in 2015 as a probable human carcinogen.

From BBC • Feb. 17, 2026

The International Agency for Research on Cancer considers glyphosate, one of Roundup's ingredients, a probable human carcinogen, but Bayer says scientific studies and regulatory approvals show the weedkiller is safe.

From Barron's • Feb. 17, 2026

"We should have a similar campaign with tanning bed usage. The World Health Organization has deemed tanning beds to be the same level of carcinogen as smoking and asbestos. It's a class one carcinogen."

From Science Daily • Dec. 15, 2025

Federal and state regulators have found in the past that the chemical compound is a potent carcinogen with no safe level of exposure.

From Los Angeles Times • Oct. 13, 2025

But laboratory animals give more prompt results, and after the two years it was evident that this miticide was indeed a carcinogen.

From "Silent Spring" by Rachel Carson