Submitted by György Chityil ... on Sat, 01/20/2018 - 01:10 Hierarchy: NounDescription: {{organic compound}} A tricyclic ketone derivative of thioxanthene having a carbonyl group opposite the sulfur atomNgram: thioxanthoneNgram Text: thioxanthoneSource: WiktionaryIssue: 0Wiktionary tag: organic compoundNgram Count: 1