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astrometrical

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as⋅trom⋅e⋅try

  [uh-strom-i-tree]
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–noun
the branch of astronomy that deals with the measurement of the positions and motions of the celestial bodies.
Also called positional astronomy.

Origin:
1865–70; astro- + -metry

Related forms:
as⋅tro⋅met⋅ric  [as-troh-me-trik] , as⋅tro⋅met⋅ri⋅cal, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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as·trom·e·try   (ə-strŏm'ĭ-trē)   
n.  The scientific measurement of the positions and motions of celestial bodies.
as'tro·met'ric (ās'trō-mět'rĭk), as'tro·met'ri·cal adj.
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
astrometry   (ə-strŏm'ĭ-trē)  Pronunciation Key 
The scientific measurement of the positions and motions of celestial bodies.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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