Keywords: open (automatic doors)
1. Two relatively narrow vertical flat surfaces that separate horizontally from each other or any thing or any action that can be associated with this in context.
As a Noun
1. A set of doors that slide open automatically. English = automatic doors.
2. A set of doors that slide open. English = sliding doors.
As a Verb or Adjective
1. Of automatic doors, to open.
2. Of sliding doors, to open.