Other Free Encyclopedias » 21st Century Webster's Family Encyclopedia » 21st Century Webster's Family Encyclopedia - Constance Missal to Crete

Contrail

ice contrails crystals

Contrail, line of cloud that forms behind aircraft flying at high altitudes. Contrails form when water vapor from the exhaust or in the air condenses into droplets or freezes into ice crystals. Ice crystals from contrails may precipitate rain or snow.

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