parallax

noun par·al·lax \ ˈper-ə-ˌlaks , ˈpa-rə- \

Definition of parallax

:the apparent displacement or the difference in apparent direction of an object as seen from two different points not on a straight line with the object; especially :the angular difference in direction of a celestial body as measured from two points on the earth's orbit

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Origin and Etymology of parallax

Middle French parallaxe, from Greek parallaxis, from parallassein to change, from para- + allassein to change, from allos other


Medical Dictionary

parallax

noun par·al·lax \ ˈpar-ə-ˌlaks \

medical Definition of parallax

:the apparent displacement or the difference in apparent direction of an object as seen from two different points not on a straight line with the object
  • motion parallax governs the way objects appear to move when the eyes or head are shifted
  • —Edmund Andrews

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