electric

"Electric" has been used in Emacs to refer to different things.
Among them:

- electric modes and buffers: modes that typically pop-up in a modal kind of
  way a transient buffer that automatically disappears as soon as the user
  is done with it.

- electric keys: self inserting keys which additionally perform some side
  operation which happens to be often convenient at that time.  Examples of
  such side operations are: reindenting code, inserting a newline,
  ... auto-fill-mode and abbrev-mode can be considered as built-in forms of
  electric key behavior.