Submitted by György Chityil ... on Fri, 01/19/2018 - 20:53 Hierarchy: NounDescription: {{metallurgy}} Any substance added to an electrolytic bath to yield a brighter electroplated surface.Ngram: brightenerNgram Text: brightenerSource: WiktionaryIssue: 0Wiktionary tag: metallurgyNgram Count: 1