Submitted by György Chityil ... on Sat, 01/20/2018 - 01:06 Hierarchy: NounDescription: {{astronomy}} A large-scale system of convection cells covering the surface of the sunNgram: supergranulationNgram Text: supergranulationSource: WiktionaryIssue: 0Wiktionary tag: astronomyNgram Count: 1
