Pronunciation: /ˈkɑnˌtreɪl/
noun a visible trail left in the sky by an aircraft and consisting of a line of condensed water or ice particles created by the aircraft's engines
A1 I saw a contrail in the sky while I was walking.
A2 The airplane left a long contrail behind it as it flew overhead.
B1 Contrails are formed when water vapor from airplane exhaust freezes in the sky.
B2 Contrails can sometimes linger in the sky for a long time, depending on the weather conditions.
C1 Scientists study contrails to better understand their impact on the Earth's atmosphere.
C2 Pilots are trained to avoid flying through contrails to reduce the risk of engine damage.
formal The contrail left by the airplane lingered in the sky for several minutes.
informal Did you see that long white line in the sky? That's a contrail from a passing plane.
slang Check out that sky streak! It's a contrail from a jet flying overhead.
figurative His words left a contrail of doubt in her mind, lingering long after he had spoken.
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