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antihalation

[an-tee-hey-ley-shuh n, -ha-, an-tahy-] /ˌæn ti heɪˈleɪ ʃən, -hæ-, ˌæn taɪ-/
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
2.
resistant to halation.
Origin
1900-1905
1900-05; anti- + halation
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for antihalation

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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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