Cigarette

A narrow roll of tobacco wrapped in paper and designed to be smoked by inhaling fumes from its burning contents. Its use delivers nicotine and exposes the body to toxic combustion products.

Tobacco smoke: An aerosol of particles and gases produced by burning tobacco and other cigarette materials. It is the mixture formed when a cigarette burns and the substance inhaled during smoking.
Cigarette smoking: The inhalation of smoke produced by burning cigarettes, usually through repeated tobacco use. It is the behavior enabled by the cigarette and the main route through which its health effects arise.
Tobacco: Plants of the genus Nicotiana and their leaves, used in products that deliver nicotine. Tobacco leaf is the principal material inside most cigarettes.
Cigar: A tightly rolled bundle of tobacco leaf or tobacco-containing material intended to be smoked. Unlike a cigarette, a cigar is generally wrapped in tobacco leaf rather than paper.
Nicotine: An addictive alkaloid found naturally in tobacco that acts on nicotinic acetylcholine receptors. Burning tobacco releases nicotine, which helps sustain cigarette dependence.
Tobacco dependence: A persistent pattern of tobacco use driven by nicotine dependence despite harmful consequences. Nicotine delivery makes cigarettes capable of reinforcing repeated use and dependence.
Cigarette machine: A machine that manufactures cigarettes by forming tobacco into paper-wrapped rods and cutting them to length. Mechanized production made cigarettes cheaper and more consistent at large scale.
Pipe smoking: The practice of burning tobacco in a pipe and drawing smoke through its stem. A pipe burns loose tobacco in a bowl rather than a paper-wrapped rod.
Combustion: A chemical reaction in which a fuel reacts with an oxidizer, releasing heat and often light. A cigarette’s burning tip drives smoke formation and creates many harmful chemicals.
Lung cancer: A malignant tumor arising in lung tissue, with smoking as its leading preventable cause. Long-term exposure to carcinogens in cigarette smoke sharply increases lung cancer risk.

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