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A contrail thought to contain a chemical agent that a government is dispersing as part of a conspiracy.

References in periodicals archive ?
I keep stumbling on websites about chemtrails and I'm starting to think I could quite easily become sympathetic to the chemtrail theorists' cause.
He's a supporter of the chemtrail conspiracy theory that believes it's something to do with population control.
The article "Stolen Skies: The Chemtrail Mystery" (EIJ, Summer 2002), contained many inaccuracies which deserve correction.
Once rather sceptical myself, when Linda first started investigating the chemtrail phenomenon, I was soon convinced, by my own sightings here as well as by the many reports Linda regularly receives from experts elsewhere, including professional meteorologists, that this geoengineering, without our consent, is a world-wide phenomenon, including but in no way limited to Cyprus.
GREEN PARTY members are calling on the public to join them at an event to raise awareness of chemtrail and geo- engineering phenomena, which they say is happening in the skies over Cyprus.
Anthony served as a source of information and advocate on the airplane chemtrail conspiracy.
Governments and scientists say there is no such thing as a chemtrail.
Thanks for publishing Stolen Skies: The Chemtrail Mystery.
The term chemtrail is derived from "chemical trail" in the same way as contrail is an abbreviation for the condensation trail left by commercial aircraft.
Meanwhile, the Internet was abuzz with chemtrail conspiracy theories ranging from aliens leaving messages in the sky to government agencies dumping mind-control chemicals on an unsuspecting populace.
Chemtrails differ in that they do not dissipate in a short time.
Are the chemtrails really part of a clandestine government conspiracy?