Submitted by György Chityil ... on Fri, 01/19/2018 - 23:54 Hierarchy: NounDescription: {{organic compound}} The helicene having five benzene rings fused into a flat spiralNgram: pentaheliceneNgram Text: pentaheliceneSource: WiktionaryIssue: 0Wiktionary tag: organic compoundNgram Count: 1
