A branch of aeromancy (divination through aerial phenomena such as thunder and lightning) concerned with divination from apparitions or visions in the air. For instance, the shapes of clouds and the occurrence of rare aerial phenomena such as comets were interpreted in chaomancy.
(See also austromancy ; meteormancy )
"Chaomancy." Encyclopedia of Occultism and Parapsychology. . Encyclopedia.com. (September 20, 2018). http://www.encyclopedia.com/science/encyclopedias-almanacs-transcripts-and-maps/chaomancy
"Chaomancy." Encyclopedia of Occultism and Parapsychology. . Retrieved September 20, 2018 from Encyclopedia.com: http://www.encyclopedia.com/science/encyclopedias-almanacs-transcripts-and-maps/chaomancy