Submitted by György Chityil ... on Fri, 01/19/2018 - 19:32 Hierarchy: NounDescription: {{organic chemistry}} Any of many terpenoid acids produced by the resin ducts of conifers.Ngram: resin acidNgram Text: resin acidSource: WiktionaryIssue: 0Wiktionary tag: organic chemistryNgram Count: 2