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visual magnitude

noun
  1. Astronomy. magnitude(def 5a).
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for visual magnitude

visual magnitude

noun
  1. astronomy the magnitude of a star as determined by visual observationCompare photoelectric magnitude
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012