silver bromide

Noun
  1. A bromide that darkens when exposed to light;
    Used in making photographic emulsions (synset 115039759)
    is a type of: bromide - any of the salts of hydrobromic acid; formerly used as a sedative but now generally replaced by safer drugs
    substance meronym: emulsion, photographic emulsion - a light-sensitive coating on paper or film; consists of fine grains of silver bromide suspended in a gelatin

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