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See more synonyms for astrometry on Thesaurus.com
  1. the branch of astronomy that deals with the measurement of the positions and motions of the celestial bodies.
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Origin of astrometry

First recorded in 1865–70; astro- + -metry
Also called positional astronomy.
Related formsas·tro·met·ric [as-troh-me-trik] /ˌæs troʊˈmɛ trɪk/, as·tro·met·ri·cal, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words

horoscope, astrophysics, astrometry, stargazing, uranology, selenology, astrochemistry

Examples from the Web for astrometry

Historical Examples

  • The subject of Astrophysics does not admit of so definite a subdivision as that of Astrometry.

    Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 7


British Dictionary definitions for astrometry


  1. the branch of astronomy concerned with the measurement of the position and motion of celestial bodies
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Derived Formsastrometric (ˌæstrəˈmɛtrɪk) or astrometrical, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

astrometry in Science


  1. The scientific measurement of the positions and motions of celestial bodies.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.