Submitted by György Chityil ... on Sat, 01/20/2018 - 01:10 Hierarchy: NounDescription: {{organic chemistry}} A cation obtained by protonation of tetramethylurea; any derivative of this cationNgram: tetramethyluroniumNgram Text: tetramethyluroniumSource: WiktionaryIssue: 0Wiktionary tag: organic chemistryNgram Count: 1