#projection_screen__screen__silver_screen  a white or silvered surface where pictures can be projected for viewing
  supertype:  #surface  the outer boundary of an artifact or a material layer constituting or resembling such a boundary; "there is a special cleaner for these surfaces"; "the cloth had a pattern of red dots on a white surface"
  subtype:  #wide_screen  a projection screen that is much wider than it is high

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