> **evanescence** – noun
> <br>
> **evanescent** &ndash; adjective
> <br>
> Soon passing out of sight, memory, or existence; quickly fading or
> disappearing.
> <br>
> [oxforddictionaries.com](http://www.oxforddictionaries.com/us/definition/american_english/evanescent)

*Evanescence*, as applied to dream psychology, is well represented in
[a browser search](https://www.google.com/search?q=dream+evanescence+psychology).