carcinogen

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

NOUN

cancer-causing agent

Synonyms

STRONGEST

poison toxin

STRONG

killer mutagen

WEAK

deadly chemical health hazard

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

Additional studies from several of the same authors have identified gas stoves as a source of benzene, a known carcinogen linked to leukemia and other blood disorders.

From Science Daily • Dec. 3, 2025

But a recent FAA-funded study found two chemicals that can: formaldehyde, a known carcinogen and neurotoxin, and tridecane, which can cause headaches and stupor.

From The Wall Street Journal • Sep. 14, 2025

This is why there is no “safe” dose of a carcinogen.

From "Silent Spring" by Rachel Carson