Parallax

//ˈpæɹ.əˌlæks// noun, verb

Definitions

Noun
  1. 1
    An apparent shift in the position of two stationary objects relative to each other as viewed by an observer, due to a change in observer position. countable, uncountable

    "[…] Heliocentrick places, to which the Parallaxes being applied, give the Geocentrick."

  2. 2
    the apparent displacement of an object as seen from two different points that are not on a line with the object wordnet
  3. 3
    The angle of seeing of the astronomical unit. countable, uncountable
Verb
  1. 1
    To measure (a distance) based on parallax observations. transitive
  2. 2
    To produce an illusion of levels of distance by shifting layers at different rates.

Etymology

Etymology 1

From Middle French parallaxe, from Ancient Greek παράλλαξις (parállaxis, “alteration”) from παραλλάσσω (parallássō, “to cause to alternate”) from ἀλλάσσω (allássō, “to alter”) from ἄλλος (állos, “other”). By surface analysis, par- + all- + -ax.

Etymology 2

From Middle French parallaxe, from Ancient Greek παράλλαξις (parállaxis, “alteration”) from παραλλάσσω (parallássō, “to cause to alternate”) from ἀλλάσσω (allássō, “to alter”) from ἄλλος (állos, “other”). By surface analysis, par- + all- + -ax.

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