Submitted by György Chityil ... on Fri, 01/19/2018 - 23:49 Hierarchy: NounDescription: {{organic compound}} The para- isomer of phenylenediamineNgram: paraphenylenediamineNgram Text: paraphenylenediamineSource: WiktionaryIssue: 0Wiktionary tag: organic compoundNgram Count: 1