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| Mül·ler-Ly·er il·lu·sion [ mylər l ər i l'n ] (plural Mül·ler-Ly·er il·lu·sions) |
noun |
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| Definition: |
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optical illusion: an optical illusion in which a line with inward-pointing arrows is seen as longer than one of equal length with outward-pointing arrows
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| [Late 19th century. After Franz Carl Müller-Lyer (1857-1916), German sociologist and philosopher] |
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