Definition of astrometry in English:

astrometry

noun

mass noun
  • The measurement of the positions, motions, and magnitudes of stars.

    • ‘The main branches are astrometry, celestial mechanics, and astrophysics.’
    • ‘In this way, astronomers will perform very precise astrometry to detect the reflex motion of stars due to orbiting planets.’
    • ‘One technique, known as astrometry, involves precisely measuring the position of a star.’
    • ‘This method, known as astrometry, is the oldest planet-hunting method, but no planets have yet been found based on it alone.’
    • ‘And while methods such as photometry and astrometry, which hold great promise in the long term, are still being perfected, other innovative approaches are already yielding results.’

Pronunciation

astrometry

/əˈstrɒmɪtri/