Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun film The filmmaking technique of shooting foreground action against an evenly-lit monochromatic background for the purpose of removing the background from the scene and replacing it with a different image or scene.
  • noun film The visual effect resulting from this technique as well as the colored screen itself, especially blue.
  • noun computing Short for blue screen of death.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

A compound of blue + screen, from the historical film-making technique of using blue backgrounds.

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