A cigarette is a disposable smoke delivery device consisting of a small (generally less than 10cm in length and 10mm in diameter) cylinder of cured and shredded tobacco leaves (or in some cases other herbs), wrapped in paper, which is ignited and let smolder for the purpose of inhaling its smoke. A cigarette is distinguished from a cigar by its small size and paper wrapping (cigars are composed entirely of tobacco); a small, cigarette-sized cigar is called a "cigarillo".
Some cigarette smokers roll their own cigarettes by wrapping loose cured tobacco in paper; most, however, purchase machine-made commercially available brands, generally sold in small cardboard packages of 20 cigarettes. Commercial cigarettes usually contain a cellulose acetate or cotton filter through which the smoker inhales the cigarette's smoke; the filter serves to cool and somewhat clean the smoke.
Before the Second World War many manufacturers gave away collectible cards, one in each packet of cigarettes. This practice was discontinued to save paper during the war, and was never generally reintroduced.
ACigarettes and cancer
Cigarette smoking is one of the principal causes of lung cancer, a major cause of death amongst smokers. The tobacco industry tried for many years to deny this link, and to oppose medical research that attempted to prove the link.
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