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any substance or agent that tends to produce a cancer.
(pathol) any substance that produces cancer

“cancer-causing substance,” 1853, from carcinoma + -gen.

carcinogen car·cin·o·gen (kär-sĭn’ə-jən, kär’sə-nə-jěn’)
A cancer-causing substance or agent.
car’cin·o·gen’ic (kär’sə-nə-jěn’ĭk) adj.
A substance or agent that can cause cells to become cancerous by altering their genetic structure so that they multiply continuously and become malignant. Asbestos, DDT, and tobacco smoke are examples of carcinogens.


Read Also:

  • Carcinoid

    a small, yellowish amino-acid and peptide-secreting tumor usually found in the gastrointestinal tract and lung. carcinoid car·ci·noid (kär’sə-noid’) n. A small tumor that secretes serotonin and is usually found in the gastrointestinal tract.

  • Carcinoid-syndrome

    the systemic effects, including flushing, palpitations, diarrhea, and cramps, resulting from increased blood levels of serotonin secreted by a carcinoid.

  • Carcinoid tumor

    carcinoid tumor carcinoid tumor n. A small slow-growing neoplasm composed of islands of rounded cells of medium size, with moderately small vesicular nuclei. Also called argentaffinoma.

  • Carcinolytic

    carcinolytic carcinolytic car·ci·no·lyt·ic (kär’sə-nō-lĭt’ĭk) adj. Destructive to the cancer cells.

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