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 vapor in the engine exhaust
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Examples of condensation trail
condensation trail
Pentagon spokesman Dave Lapan also said the plume was a jet condensation trail.
From the washingtontimes.com
The condensation trail, or contrail, of an apparent missile launch off the coast of California west of Los Angeles has prompted speculation as to what might have caused it.
From the telegraph.co.uk
