double star
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Related to double star: Optical double star
double star
n.
See binary star.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
double star
n
(Celestial Objects) two stars, appearing close together when viewed through a telescope; either physically associated (binary star) or not associated (optical double star). See also binary star, optical double star
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
dou′ble star′
n.
two stars that appear together in the sky and appear as one to the eye or through a low-power telescope.
[1775–85]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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Noun | 1. | double star - a system of two stars that revolve around each other under their mutual gravitation star - (astronomy) a celestial body of hot gases that radiates energy derived from thermonuclear reactions in the interior |
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