optical illusion

noun

Definition of optical illusion

:illusion 2a(1)

Examples of optical illusion in a Sentence

  1. The closer building looks larger than the farther one, but it's just an optical illusion. The two buildings are actually the same size.

Recent Examples of optical illusion from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'optical illusion.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of optical illusion

1763


OPTICAL ILLUSION Defined for English Language Learners

optical illusion

noun

Definition of optical illusion for English Language Learners

  • : something that looks different from what it is : something that you seem to see but that is not really there


OPTICAL ILLUSION Defined for Kids

optical illusion

noun

Definition of optical illusion for Students

:something that looks different from what it actually is

Medical Dictionary

optical illusion

noun

medical Definition of optical illusion

:visual perception of a real object in such a way as to misinterpret its actual nature

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to praise usually to excess

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