optical illusion - definition in the American English Dictionary - Cambridge Dictionaries Online

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English definition of “optical illusion”

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optical illusion

noun [C]  us   /ˈɑp·tɪ·kəl ɪˈlu·ʒən/
something that you think you see, but that is not really there: Some sort of optical illusion makes these things seem to travel faster than they really do.
Translations of “optical illusion”
in Chinese (Traditional) 視錯覺, 光幻覺…
in Russian оптический обман…
in Turkish göz yanılması, optik yanılsama…
in Chinese (Simplified) 视错觉, 光幻觉…
in Polish złudzenie optyczne…
(Definition of optical illusion from the Cambridge Academic Content Dictionary © Cambridge University Press)
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