blue screen

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

Noun

 * 1)  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.
 * 2)  The visual effect resulting from this technique as well as the colored screen itself, especially blue.

Translations

 * Finnish: siniruutu
 * French: écran bleu
 * Russian: си́ний экра́н
 * Turkish: mavi ekran
 * Ukrainian: си́ній екра́н