parallax

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par·al·lax / ˈparəˌlaks/ • n. the effect whereby the position or direction of an object appears to differ when viewed from different positions, e.g., through the viewfinder and the lens of a camera. ∎  the angular amount of this in a particular case, esp. that of a star viewed from different points in the earth's orbit.DERIVATIVES: par·al·lac·tic / ˌparəˈlaktik/ adj.

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