Submitted by György Chityil ... on Fri, 01/19/2018 - 23:54 Hierarchy: NounDescription: {{geology}} the alteration of rocks and minerals by gases or magmatic fluid within volcanos etcNgram: pneumatolysisNgram Text: pneumatolysisSource: WiktionaryIssue: 0Wiktionary tag: geologyNgram Count: 1