Definition of astrometric in US English:

astrometric

adjective

  • See astrometry

    • ‘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.’
    • ‘After obtaining the images, she used astrometric software to determine the coordinates of the target asteroid's apparent position in each image.’
    • ‘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.’
    • ‘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.’

Pronunciation

astrometric

/ˌastrōˈmetrik/