WordReference Random House Unabridged Dictionary of American English © 2025
vis′ual bi′nary, [Astron.]
  1. Astronomya binary star having components that are sufficiently separated to be resolved by a telescope. Cf. spectroscopic binary. 

'visual binary' also found in these entries (note: many are not synonyms or translations):
binary star - spectroscopic binary

Forum discussions with the word(s) "visual binary" in the title:


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