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pincushion distortion

American  

noun

Optics.

  1. a distortion produced by a lens in which the magnification increases toward the edge of the field.

Etymology

Origin of pincushion distortion

First recorded in 1890–95

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.