a yellowish, water-insoluble powder, AgBr, which darkens on exposure to light, produced by the reaction of silver nitrate with a bromide: used chiefly in the manufacture of photographic emulsions.
Why Do We Call It The “Silver Screen”?Since its introduction in the early 20th century, the film industry’s contributions to the English language have been manifold.
Origin of silver bromide
First recorded in 1875–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for silver bromide
a yellowish insoluble powder that darkens when exposed to light: used in making photographic emulsions. Formula: AgBr
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012