Dictionary.com
Thesaurus.com
Synonyms

astrometry

American  
[uh-strom-i-tree] / əˈstrɒm ɪ tri /

noun

  1. the branch of astronomy that deals with the measurement of the positions and motions of the celestial bodies.

astrometry British  
/ ˌæstrəˈmɛtrɪk, əˈstrɒmɪtrɪ /

noun

  1. 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
astrometry Scientific  
/ ə-strŏm′ĭ-trē /

  1. The scientific measurement of the positions and motions of celestial bodies.

Other Word Forms

  • astrometric adjective
  • astrometrical adjective

Etymology

Origin of astrometry

First recorded in 1865–70; astro- + -metry

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The ESA astrometry satellite Gaia provides an ideal data set for this kind of big-data galactic archeology.

From Science Daily • Mar. 21, 2024

A related technique, astrometry, could do much the same thing, pinpointing planetary masses by measuring how each world’s gravitational influence slightly shifts its star’s position in the plane of the sky.

From Scientific American • Feb. 10, 2021

We performed relative astrometry between our WFC3/F160W image and our Chandra observations.

From Nature • Oct. 15, 2017

Astronomers have tried to measure whether multiple planet systems all lie in the same plane using astrometry.

From Textbooks • Oct. 13, 2016

He employed in his discussion the radial velocities of 280 stars, spectroscopically Astrophysics. determined; and the upshot signally exemplified the community of interests between the rising science of astrophysics and the ancient science of astrometry.

From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 7 "Arundel, Thomas" to "Athens" by Various

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.