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2017 Word of the Year

pincushion distortion

noun, Optics.
1.
a distortion produced by a lens in which the magnification increases toward the edge of the field.
Origin of pincushion distortion
1890-1895
First recorded in 1890-95
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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