Submitted by György Chityil ... on Fri, 01/19/2018 - 23:49 Hierarchy: NounDescription: {{organic compound}} A cyclic trimer of acetaldehyde once used as an antidepressant.Ngram: paraldehydeNgram Text: paraldehydeSource: WiktionaryIssue: 0Wiktionary tag: organic compoundNgram Count: 1