Submitted by György Chityil ... on Fri, 01/19/2018 - 18:00 Hierarchy: NounDescription: {{organic compound}} Any carotenoid containing a carboxylic acid functional group.Ngram: carotenoic acidNgram Text: carotenoic acidSource: WiktionaryIssue: 0Wiktionary tag: organic compoundNgram Count: 2