Noun: parallax 'per-u,laks or 'pa-ru,laks [N. Amer], 'pa-ru,laks [Brit]
- The apparent displacement of an object as seen from two different points that are not on a line with the object
"Astronomers use parallax to measure the distance to nearby stars"
Derived forms: parallaxes
Type of: optical phenomenon
Encyclopedia: Parallax