contrail

(ˈkɑnˌtreɪl )

SOSTANTIVO

Scia (di un aeroplano)

noun

a white of water vapor that sometimes forms in the of an aircraft; vapor trail

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ORIGIN

Derived from "CONdensation TRAIL", this term was first recorded in 1943, probably as a result of high-frequency of high-altitude flights in military operations. Contrails are also known to conspiracy theorists as "chemtrails."