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Glossary

Combustion

Combustion is the process of burning a substance in oxygen, producing heat and often light. 

When a cigarette is lit, the combination of tobacco (fuel) and oxygen in the air generates a self-sustaining combustion process that consumes the tobacco.

The combustion of tobacco results in the formation of smoke (that contains a range of chemical constituents), heat, and ash. The high heat associated with combustion leads to the thermal breakdown of the tobacco when it is burned, resulting in the production of many of the toxicants found in cigarette smoke. Read more about these chemicals in the problem of burning.

We have developed smoke-free products that heat tobacco without burning it and accordingly generate much lower levels of harmful chemicals. Read more about these alternatives to smoking.