Definition of astrometric in US English:

astrometric

adjective

  • See astrometry

    • ‘After obtaining the images, she used astrometric software to determine the coordinates of the target asteroid's apparent position in each image.’
    • ‘The main objective of the astrometric instrument (ASTRO) is to obtain accurate measurements of the relative positions of all objects that cross the fields of view of Gaia's two telescopes.’
    • ‘It was designed to produce extremely accurate astrometric measurements in small fields, and has been used to measure parallaxes and therefore distance for faint stars.’
    • ‘To date there have been no successful detections of extrasolar planets with the astrometric method.’
    • ‘Tycho had collected in one place the finest astrometric instruments of his day - four decades before Galileo introduced the astronomical telescope.’

Pronunciation

astrometric

/ˌastrōˈmetrik/