Dictionary

astrometry

noun as·trom·e·try \ə-ˈsträ-mə-trē\

Definition of ASTROMETRY

:  a branch of astronomy that deals with measurements (as of positions and movements) of celestial bodies
as·tro·me·tric \ˌas-trə-ˈme-trik\ adjective
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First Known Use of ASTROMETRY

circa 1859

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