chromatic aberration

noun Optics.
the variation of either the focal length or the magnification of a lens system with different wavelengths of light, characterized by prismatic coloring at the edges of the optical image and color distortion within it.
Also called chromatism.


Origin:
1825–35

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Collins
World English Dictionary
chromatic aberration
 
n
a defect in a lens system in which different wavelengths of light are focused at different distances because they are refracted through different angles. It produces a blurred image with coloured fringes

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American Heritage
Medical Dictionary

chromatic aberration n.
Color distortion in an image produced by a lens, caused by the inability of the lens to bring the various colors of light to focus at a single point. Also called chromatism.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
chromatic aberration  
See under aberration.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
However, avoid extensive use of pure red or blue text since they result in chromatic aberration and appear fuzzy.
Use of reflected branch avoids introducing chromatic aberration.
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