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From Middle French parallaxe, from Ancient Greek παράλλαξις (parállaksis, alteration) from παραλλάσσω (parallássō, cause to alternate) from αλλάσσω (allássō, alter) from ἄλλος (állos, other).


parallax (plural parallaxes)

  1. The change of angular position of two stationary points relative to each other as seen by an observer, due to the motion of an observer.
  2. The apparent shift of an object against a background due to a change in observer position.
    • 2008, Bernard Perron, ‎Mark J. P. Wolf, The Video Game Theory Reader 2 (page 157)
      Planes farther back on the z-axis scroll more slowly than those in front of them, producing a parallax effect. Early games with parallax scrolling tended to have their action taking place all in the forefront plane []
  3. The angle of seeing of the astronomical unit.

Derived terms[edit]


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