Definition of Zöllner illusion in English:

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Zöllner illusion

Pronunciation: /ˈtsəlnər/ /ˈzôl-/


An optical illusion in which long parallel lines appear to diverge or converge when crossed by rows of short oblique lines.
Example sentences
  • The Poggendorff illusion was actually derived from another famous illusion - the Zöllner illusion.
  • It may be that the Zöllner illusion is caused by this impression of depth.


Late 19th century: named after Johann K. F. Zöllner (1834–82), German physicist.

For editors and proofreaders

Syllabification: Zöll·ner il·lu·sion

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