Simple Definition of optical illusion
: something that looks different from what it is : something that you seem to see but that is not really there
Full Definition of optical illusion
: illusion 2a(1)
Examples of optical illusion in a sentence
The closer building looks larger than the farther one, but it's just an optical illusion. The two buildings are actually the same size.
First Known Use of optical illusion
OPTICAL ILLUSION Defined for Kids
Definition of optical illusion for Students
: something that looks different from what it actually is
Medical Definition of optical illusion
: visual perception of a real object in such a way as to misinterpret its actual nature
Seen and Heard
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