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astrometric binary

noun, Astronomy.
a binary star that can be recognized as such because of its undulating proper motion.
Origin of astrometric binary
1975-80 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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astrometric binary in Science
astrometric binary
See under binary star.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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