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View synonyms for optical illusion

optical illusion

noun

  1. illusion4

optical illusion

noun

  1. an object causing a false visual impression

  2. an instance of deception by such an object

“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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Word History and Origins

Origin of optical illusion1

First recorded in 1785–95

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optical glassoptical isomer

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