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vertical circle

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vertical circle

 
Use vertical circle in a Sentence
–noun Astronomy.
a great circle on the celestial sphere passing through the zenith.
Origin:
1550–60
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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vertical circle  
n.  A great circle on the celestial sphere that passes through the zenith and the nadir and thus is perpendicular to the horizon.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Science Dictionary
vertical circle  
A great circle on the celestial sphere that passes through the zenith and the nadir and thus is perpendicular to the horizon.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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