Submitted by György Chityil ... on Sat, 01/20/2018 - 01:06 Hierarchy: AdjectiveDescription: {{inorganic chemistry}} Of or pertaining to thallium, especially to thallium having an valency of 1Ngram: thallousNgram Text: thallousSource: WiktionaryIssue: 0Wiktionary tag: inorganic chemistryNgram Count: 1