antihalation

[ an-tee-hey-ley-shuhn, -ha-, an-tahy- ]

noun

1. the process of treating a film base with a light-absorbing substance to prevent refraction of light from the rear of the film.

adjective

1. resistant to halation.

antihalation

/ ˌæntɪhəˈleɪʃən /

noun

1. photog
   1. a process by which light, passing through the emulsion on a film or plate, is not reflected back into it but is absorbed by a layer of dye or pigment, usually on the back of the film, thus preventing halation
   2. ( as modifier )

      antihalation backing

Word History and Origins

Origin of antihalation¹

First recorded in 1900–05; anti- + halation