- the branch of astronomy that deals with the measurement of the positions and motions of the celestial bodies.
Origin of astrometry
Also called positional astronomy.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for astrometry
The subject of Astrophysics does not admit of so definite a subdivision as that of Astrometry.
- the branch of astronomy concerned with the measurement of the position and motion of celestial bodies
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
- The scientific measurement of the positions and motions of celestial bodies.
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