Submitted by György Chityil ... on Fri, 01/19/2018 - 20:48 Hierarchy: NounDescription: {{geology}} a concretion of oxides of manganese and iron found on the floor of many oceansNgram: manganese noduleNgram Text: manganese noduleSource: WiktionaryIssue: 0Wiktionary tag: geologyNgram Count: 2
