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Longman Dictionary of Contemporary English
contrail
noun
EXAMPLES FROM CORPUS
▪ I gazed up at the withering contrail.
▪ One figure-eight contrail created as part of a NASAfunded study was tracked by satellite for 10 hours last spring.
▪ Sometimes contrails evaporate quickly and disappear.
▪ The complacent citizen looks up and sees a distant jet's contrails, whooshing along in impressive white streams.
Douglas Harper's Etymology Dictionary
contrail

1945, from condensation trail.

Wiktionary
contrail

n. An artificial cloud made by the exhaust of jet aircraft or wingtip vortex that precipitate a stream of tiny ice crystals in moist, frigid upper air.

WordNet
contrail

n. 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 [syn: condensation trail]

Wikipedia
Contrail

Contrails (; short for "condensation trails") or vapor trails are line-shaped clouds sometimes produced by aircraft engine exhaust, typically at aircraft cruise altitudes several miles above the Earth's surface. Contrails are composed primarily of water, in the form of ice crystals. The combination of water vapor in aircraft engine exhaust and the low ambient temperatures that often exists at these high altitudes allows the formation of the trails. Impurities in the jet exhaust from the fuel, including sulfur compounds (0.05% by weight in jet fuel) provide some of the particles that can serve as sites for water droplet growth in the exhaust and, if water droplets form, they might freeze to form ice particles that compose a contrail. Their formation can also be triggered by changes in air pressure in wingtip vortices or in the air over the entire wing surface.

Depending on the temperature and humidity at the altitude the contrails form, they may be visible for only a few seconds or minutes, or may persist for hours and spread to be several miles wide, eventually resembling natural cirrus or altocumulus clouds. Persistent contrails are of particular interest to scientists because they increase the cloudiness of the atmosphere. The resulting cloud forms may resemble cirrus, cirrocumulus, or cirrostratus, and are sometimes called cirrus aviaticus. Persistent spreading contrails are thought by some, without overwhelming scientific proof, to have a significant effect on global climate. Persistent contrails are sometimes called chemtrails in reference to the conspiracy theory regarding the undisclosed spraying of chemical or biological agents by various high-flying aircraft.

Contrail (company)

Contrail was a Japanese video game production company best known for their work on Legend of Legaia and Wild Arms 2.

It was formed on 16 October 1997 as an internal production studio of Sony Computer Entertainment, Inc. with Takahiro Kaneko as head. Between 1998 and 2000, Contrail oversaw the development of several PlayStation titles from external developers until SCEI integrated its operations back into the main company in August 2000.

Contrail (disambiguation)

Contrail or Contrails may refer to:

  • Contrail, a condensation trail caused by an aircraft
  • Contrails (book), a handbook issued to new cadets entering the United States Air Force Academy
  • Contrail (company), a defunct video game developer
  • Contrail (network), a social network developed by Microsoft for use with mobile devices
  • Contrail (software), a Cloud Federation computing project
Contrail (network)

Contrail is a social network developed by Microsoft for use on mobile devices using Windows Azure, with emphasis on privacy using data encryption.

Contrail (software)

Contrail was a Cloud Federation computing project that ran from 1/10/2010 until 31/1/2014. Contrail produced open source Cloud stack software including Security, PaaS components, Distributed file system, Application Lifecycle management middleware, and SLA Management. Contrail supports OVF standard and runs on OpenStack and OpenNebula. Contrail software is a full IaaS + PaaS Cloud stack ready to implement Cloud Federations.

The most recent release is version 1.3, allowing:

  • Cloud Federations
  • SLA Management
  • Usage CONtrol
  • Login over Google
  • XtreemFS support
  • SAML Support
  • OAuth2 standard
  • Virtual infrastructure Network (VIN)
  • Virtual Execution Platform (VEP)
  • Single Sign On (SSO)* Cloud federations*PAAS*IAAS*
  • Authorization Server
  • Dynamic-CA
  • Hadoop

Contrail is partially funded by the FP7 Programme of the European Commission under Grant Agreement FP7-ICT-257438.

Contrail also allows virtualization, alongside Infrastructure-as-a-Service, Platform-as-a-Service. and Hybrid clouds.

Contrail (song)

"Contrail" is a song recorded by Japanese recording artist Namie Amuro for her eleventh studio and second bilingual ( Japanese and English language) album, Feel (2013). The track was entirely written, composed, arranged, and produced by Japanese musician Nao'ymt. The single premiered on May 29, 2013 as the lead single from the album, and her second digital-only single. Musically, "Contrail" is a dance song, influenced by electronic dance music. Lyrically, it is a self-empowerment anthem that discusses themes of confidence and hope.

Upon its release, the track garnered generally favorable reviews from music critics. Many critics highlighted as one of the album's best tracks, and complimented Nao'ymt's songwriting and production. Although it was unable to chart on Japan's Oricon Singles Chart because of their restriction of digital sales, it did achieve success on the Japan Hot 100 chart provided by Billboard, peaking at number eight. It was certified platinum by the Recording Industry Association of Japan (RIAJ) for digital sales of 250,000 units. An accompanying music video was shot in downtown Los Angeles, California at Pershing square, which featured Amuro walking through the city with children. Amuro has performed the song on her Feel Tour (2013), and her 2014 Live Style Tour.

Usage examples of "contrail".

The contrail thinned slowly while she stood there looking at it, became a wide streak of yellowy cloud against the blackness, with the field of stars glimmering dimly behind it.

A thin contrail of bubbles streaks from Caraco to monster, connecting the two in an instant.

I awoke in camp that morning to find the highway to Boulder gone, the sky empty of contrails, and the aspen leaves a bright autumn gold despite what should have been a midsummer day, but after bouncing the Jeep across four miles of forest and rocky ridgeline to the back of the Flatirons, it was the sight of the Inland Sea that stopped me cold.

The space plane sailed out over the trees, riding twin contrails, ascending sharply toward a bank of glistening white clouds.

People passed supernaturally across the room, leaving contrails of smoke and scented ash.

A distant roar and an arrow-straight contrail, growing louder, closer, faster than any gengineered jetliner could possibly manage, even with strap-on assistance, marked the arrival of a spaceplane from orbit.

The top of his helmet blocked his view for a moment, but by tilting his head inside the helmet slightly, Jamie managed to see the thin streak of a contrail blazing across the pink sky.

Shapeless, formless, it was still too high to be anything more than a dark blur falling across the pink sky like a rock, dragging a bright flaming contrail behind it like a falling star.

Except for Royan, whose flight left no contrail of binary digits, mocking the most sophisticated tracker programs ever constructed.

They swept across the sky, heading towards the northern endcap, already several hundred metres long, twisting round the lighting tube like bloated contrails from an acrobatic display team.

There was a muffled bang from the lock and the gate flew open, leaving a contrail of smoke in its wake as it loudly crashed against the brick wall.

There was no flash from the muzzle, no contrail or fiery exhaust to mark the path of the AP projectile as it left the tube.

The whine of the jet engines interrupted his reverie and he looked up, holding his hand to shield his eyes from the glare of the cobalt blue sky, sighting a commercial airliner cruising serenely ahead of its long white contrails.

It's as if the biggest fuel dump in the whole world is being blown up in a sky diced into vast trapezoids by the linear contrails of American planes on dawn patrol.

She could actually see the contrails as they gained altitude and kissed the stratosphere, high above any ground-based air-defense system.