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单词 astrometry
释义

astrometryn.

Brit. /əˈstrɒmᵻtri/, U.S. /əˈstrɑmətri/
Origin: Formed within English, by compounding. Etymons: astro- comb. form, -metry comb. form.
Etymology: < astro- comb. form + -metry comb. form. Compare French astrométrie (1845).
Astronomy.
The measurement and analysis of the position, motion, or magnitude of celestial objects, esp. stars.Quot. 1847 represents the introduction of the word in its modern technical use.
ΚΠ
1811 Philos. Mag. 37 45 No one has ever said that astronomy is astrometry or uranometry, although the heavens and the stars are measured.
1847 J. F. W. Herschel Results Astron. Observ. iii. 304 Of astrometry, or the numerical expression of the apparent magnitudes of the stars.
1907 Carnegie Inst. Year Bk. 1906 204 The Department of Meridian Astrometry is designed to give an impulse to the study of stellar motion.
1932 Science 10 June 611/1 Astrometry will enter a new era if a method can be found for eliminating the inherent inaccuracies in the measurement of positions on the photographic plate.
1983 C. A. Murray Vectorial Astronometry v. 115 The word ‘place’ is used in astrometry to denote celestial angular coordinates, usually right ascension and declination.
2003 J. Scalzi Rough Guide to Universe xiv. 207 Astrometry measures a star's movement against other, more distant stars (whose distance makes them effectively stationary).
This entry has been updated (OED Third Edition, March 2012; most recently modified version published online December 2021).
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n.1811
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