It is said of a branch of knowledge based on the wisdom of dreams, their meaning, their symbology and on a larger scale, such as the capacity of the dream world as a source of information for humanity. It encompasses many currents of thought, as seemingly disparate as shamanism and psychoanalysis, to currents that consider dreams as dimensions as real as our world.
* Only one "like" per meaning and day, the more "likes" the meaning will appear higher in the list