Definition:
A carcinogen is something that can cause cancer. Examples of carcinogens include cancer causing chemicals, viruses, and environmental exposures.
Lung cancer can result from exposure to carcinogens in tobacco, as well as other environmental and occupational exposures.
Further Reading:
Pronunciation: car-sin-oh-gen
Examples:
Sara may have developed cancer from being exposed to all of the carcinogens in cigarette smoke.
