aerial perspective

American  

noun

1. a technique of rendering depth or distance in painting by modifying the tone or hue and distinctness of objects perceived as receding from the picture plane, especially by reducing distinctive local colors and contrasts of light and dark to a uniform light bluish-gray color.

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aerial perspective British  

noun

1. Also called: atmospheric perspective.  a means of indicating relative distance in terms of a gradation of clarity, tone, and colour, esp blue

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Etymology

Origin of aerial perspective

First recorded in 1725–35