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.
1 It showed footage of a missile launch in desert-like terrain, leaving a vapour trail .
2 In a time of darkness smoke stacks are soon lost, a vapour trail drifts in the dawn light.
3 As it passed over the Grand Teton National Park, one alert tourist photo-graphed the incandescent fireball and its long vapour trail .
4 But there was never any sign of their presence, save an occasional vapour trail high against the blue of the stratosphere.
5 Using her ball control, Var moved the pointer up alongside one of the satellites, pausing it on a lengthy vapour trail .
6 Sometimes when he was at his computer at a late hour, he would pick up a faint vapour trail left by Rufus.
7 Even as Clyde and Lora watched, the gleaming vapour trail began to fray at its edges, breaking up into wisps of cloud.
8 As a high-flying jet may leave a vapour trail behind it, so the outward-bound vessel of the Overlords left its own peculiar wake.
9 She turned her head to track his progress, as he began leaving a vapour trail , before disappearing in light too bright to gaze at directly.
10 Clare, led by Tony Kelly, had to travel through their vapour trails .
11 Vapour trails scribble across the sky, converging into man-made clouds that blur the sun.
12 White vapour trailed after him and hung and dispersed.
13 Last week the criss-crossed vapour trails of MiG jets hung once again over the Panjshir valley.
14 Narrow swirls of light would sweep across the great dome of sky, then hang there like vapour trails .
15 There were no haints now; instead the air was a dilute milk of their residue tracked through with vapour trails .
16 Through the cams she'd also seen an enforcer crawl out of that same crawler, issuing vapour trails from his breached suit.
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