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
antihalation in American English
(ˌæntiheiˈleiʃən, -hæ-, ˌæntai-)
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
Word origin
[1900–05; anti- + halation]This word is first recorded in the period 1900–05. Other words that entered Englishat around the same time include: Young Turk, burnout, cathode-ray tube, decompression, desensitizeanti- is a prefix meaning “against,” “opposite of,” “antiparticle of,” used in the formationof compound words (anticline); used freely in combination with elements of any origin (antibody; antifreeze; antiknock; antilepton)