CONTRAIL

Contrail

Contrails or vapor trails are long thin artificial clouds that sometimes form behind aircraft. Their formation is most often triggered by the water vapor in the exhaust of aircraft engines, but can also be triggered by the changes in air pressure in wingtip vortices or in the air over the entire wing surface. Like all clouds, contrails are made of water, in the form of a suspension of billions of liquid droplets or ice crystals.

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contrail

Noun

  1. An artificial cloud made by the exhaust of jet aircraft or wingtip vortices that precipitate a stream of tiny ice crystals in moist, frigid upper air.


The above text is a snippet from Wiktionary: contrail
and as such is available under the Creative Commons Attribution/Share-Alike License.

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