Definition.
Synchronicity is the meaningful coincidence of events in the inner world with events in the outer world. In order to be a true synchronicity, these events cannot be causally connected. For example, to dream of a rainbow-striped van, and then to see a rainbow-striped van outside a prospective employer’s office might be understood as a synchronicity. To go online after the dream in search of images of rainbow vans, and to successfully find one, probably would not, because the online searching had a causal role in finding the image.