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Definition of optical illusion noun from the Oxford Advanced Learner's Dictionary

optical illusion

noun
 
/ˌɒptɪkl ɪˈluːʒn/
 
/ˌɑːptɪkl ɪˈluːʒn/
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  1. something that tricks your eyes and makes you think that you can see something that is not there, or makes you see something as different from what it really is
See optical illusion in the Oxford Advanced American Dictionary
Check pronunciation: optical illusion

Nearby words

influence
verb
 
 
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