See more synonyms for astrometry on

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 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for astrometry

Historical Examples of astrometry

British Dictionary definitions for astrometry


  1. the branch of astronomy concerned with the measurement of the position and motion of celestial bodies
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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.