contrail, condensation trail
(noun) 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
Source: WordNet® 3.1
contrail (plural contrails)
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.
• condensation trail
• vapour trail (UK), vapor trail (US)
• cilantro, crotalin
Source: Wiktionary
7 November 2024
(verb) remove by or as if by rubbing or erasing; “Please erase the formula on the blackboard--it is wrong!”
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