Submitted by György Chityil ... on Fri, 01/19/2018 - 23:49 Hierarchy: AdjectiveDescription: {{context|crystallography}} Having cleavage planes at right angles; as in orthoclase.Ngram: orthoclasticNgram Text: orthoclasticSource: WiktionaryIssue: 0Wiktionary tag: crystallographyNgram Count: 1