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Definition of Milliarcsecond
1. Noun. (metrology) A unit of angle equal to one thousandth of an arcsecond (used especially in astronomy) ¹
¹ Source: wiktionary.com
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1. Noun. (metrology) A unit of angle equal to one thousandth of an arcsecond (used especially in astronomy) ¹
¹ Source: wiktionary.com