1. Plural of astrometry; the branch of astronomy that deals with the precise measurement and mapping of the positions and motions of celestial objects.
Usage: technical; astronomy

Examples

• Modern astrometries rely on space-based telescopes to achieve unprecedented accuracy in measuring star positions.
• The Gaia mission has revolutionized astrometries by cataloging the positions of nearly two billion stars.
• Astrometries help astronomers detect exoplanets by measuring the subtle wobble in a star's position.
• Precise astrometries are essential for understanding the structure and dynamics of our galaxy.
• Historical astrometries from centuries past allow us to track the long-term motions of nearby stars.