1. relating to or involving parallax, especially the apparent displacement of an object due to a change in observational position
Usage: astronomy; technical

Examples

• The parallactic shift of nearby stars helps astronomers measure their distances.
• Scientists used parallactic measurements to determine the star’s position relative to Earth.
• The parallactic angle changes as the observer moves to different locations.
• Parallactic observations require precise instruments to detect small angular displacements.
• The parallactic method is fundamental to stellar distance calculations.
• Researchers compared parallactic data from multiple telescopes around the world.