antihalation

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

an·ti·ha·la·tion

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

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Antihalation is always a great word to know.
So is pulldown. Does it mean:
a mechanism that intermittently advances the film through the film gate of a camera or projector
the initial exhibition period for a film
LEARN MORE UNUSUAL WORDS WITH WORD DYNAMO...
Origin:
1900–05; anti- + halation
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source Link To antihalation
Collins
World English Dictionary
antihalation (ˌæntɪhəˈleɪʃən)
 
—n
photog
 a.  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
 b.  (as modifier): antihalation backing

Collins English Dictionary - Complete & Unabridged 10th Edition
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