noun
EXAMPLES FROM CORPUS
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Even better, the full Coliseum will not be an optical illusion .
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Even knowing what he did, Kirov found it difficult to see how the optical illusion had been managed.
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For once, the optical illusion experienced by sailors leaving port seemed apt.
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It was probably an optical illusion , but the place seemed to be flying more eagles and swastikas than stars and stripes.
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Shiseido's Wrinkle Smoothing Concentrate works on the principle of an optical illusion .
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This is an optical illusion in which the diagram of a skeleton cube appears to the observer in either of two orientations.
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This is called an optical illusion , which means that your eyes trick you into seeing something that is not really there.