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Noun: condensation trail  `kón-den'sey-shun treyl
  1. An artificial cloud created by an aircraft; caused either by condensation due to the reduction in air pressure above the wing surface or by water vapour in the engine exhaust
    - contrail, vapor trail [US], vapour trail [Brit, Cdn]

Derived forms: condensation trails

Type of: cloud

Encyclopedia: Condensation trail