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barrel distortion

noun, Optics.
a distortion produced by a lens in which the magnification decreases toward the edge of the field.
Origin of barrel distortion
First recorded in 1885-90 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for barrel distortion

barrel distortion

(photog) distortion of an image produced by an optical system that causes straight lines at image margins to bulge outwards
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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