Submitted by György Chityil ... on Fri, 01/19/2018 - 23:35 Hierarchy: NounDescription: {{astronomy}} A unit of angle equal to one thousandth of an arcsecondNgram: millarcsecondNgram Text: millarcsecondSource: WiktionaryIssue: 0Wiktionary tag: astronomyNgram Count: 1
