bromide
Chemical term for a compound containing bromine, such as potassium bromide or silver bromide.
Silver bromide is a type of bromide used in photographic film.
Compound of 臭 (しゅう, 'bromine' in chemical contexts) + 化 (か, '-ize') + 物 (ぶつ, 'substance'), literally 'brominated substance'. The kanji 臭 is used for bromine in chemical nomenclature.