| NOUN | phenomenon | optical illusion | an optical phenomenon that results in a false / false or deceptive visual impression |
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| Meaning | An optical phenomenon that results in a false / false or deceptive visual impression. | |
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| Narrower | apparent motion, motion, apparent movement, movement | An optical illusion of motion / motion produced by viewing a rapid succession of still pictures of a moving object |
| mirage | An optical illusion in which atmospheric refraction by a layer of hot air distorts or inverts reflections of distant objects | |
| Broader | optical phenomenon | A physical phenomenon related to or involving light |
| Spanish | ilusión óptica | |
| Catalan | il·lusió òptica | |
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