Submitted by György Chityil ... on Sat, 01/20/2018 - 01:15 Hierarchy: NounDescription: {{geology}} A form of metamorphosis that occurs at a temperature and pressure just below the fusion point of the rockNgram: ultrametamorphosisNgram Text: ultrametamorphosisSource: WiktionaryIssue: 0Wiktionary tag: geologyNgram Count: 1