Smoke
Smoke
Smoke (/smoʊk/; from Old English smoca) is a collection of airborne solid and liquid particulates and gases emitted when a material undergoes combustion or pyrolysis, together with the quantity of air that is entrained or otherwise mixed into the mass. It is commonly an unwanted by-product of fires (including stoves, candles, oil lamps, and fireplaces), but may also be used for pest control (fumigation), communication (smoke signals), defensive and offensive capabilities in the military (smoke-screen), cooking, or smoking (smoking of food or tobacco).
Etymology
The word "smoke" (/smoʊk/) comes from the Old English smoca. This term is believed to be derived from the Proto-Germanic *smukaz, meaning "smoke, steam".
Related Terms
- Air pollution: The release of pollutants into the air that are detrimental to human health and the planet as a whole. Smoke is a common form of air pollution.
- Smog: A type of air pollution that forms a visible haze in the atmosphere. It's often caused by smoke or other pollutants.
- Secondhand smoke: Also known as environmental tobacco smoke, secondhand smoke is the smoke that fills restaurants, offices or other enclosed spaces when people burn tobacco products such as cigarettes, bidis and water pipes.
- Smoke inhalation: The act of breathing in the harmful gases, vapors, and particulate matter contained in smoke. This is a common cause of injury in victims of indoor fires.
- Smoke detector: A device that senses smoke, typically as an indicator of fire.
See Also
External links
- Medical encyclopedia article on Smoke
- Wikipedia's article - Smoke
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