Müller-Lyer illusion

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English[edit]

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Noun[edit]

Müller-Lyer illusion (plural Müller-Lyer illusions)

Two sets of arrows that exhibit the Müller-Lyer optical illusion. The set on the bottom shows that all the arrows are of the same length.
  1. An optical illusion consisting of a stylized arrow whose midpoint appears to be closer to the tail end.