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visual binary

noun, Astronomy
1.
a binary star having components that are sufficiently separated to be resolved by a telescope.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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visual bin-aries in Science
visual binary
  (vĭzh'-əl)   
See under binary star.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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