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Delboeuf illusion

Delboeuf illusion noun: an optical illusion of relative size perception, usually illustrated by two discs of identical size, one of which is surrounded by a ring.

delboeuf illusion: an optical illusion of relative size perception, usually illustrated by two discs of identical...
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Noun

Delboeuf illusion (plural Delboeuf illusions)

  1. An optical illusion of relative size perception, usually illustrated by two discs of identical size, one of which is surrounded by a ring.

Forms of Delboeuf illusion

pluralDelboeuf illusions

Origin of Delboeuf illusion

Discovered in 1865 by the Belgian scientist Joseph Remi Leopold Delboeuf (1831–1896).

Questions about Delboeuf illusion

What does Delboeuf illusion mean?
Delboeuf illusion means an optical illusion of relative size perception, usually illustrated by two discs of identical size, one of which is surrounded by a ring.
What part of speech is Delboeuf illusion?
Delboeuf illusion is a noun.
What is the plural of Delboeuf illusion?
The plural of Delboeuf illusion is Delboeuf illusions.

Words near Delboeuf illusion in the dictionary

  1. delays
  2. Delbaugh
  3. Delbene
  4. Delbenes
  5. Delbert
  6. Delboeuf illusion
  7. Delboeuf illusions
  8. Delbridge
  9. Delbridges
  10. Delbrück
  11. Delbrückian

Source and license

Adapted from Wiktionary: Delboeuf illusion (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “Delboeuf illusion.” Word.ws, https://word.ws/delboeuf_illusion. Based on Wiktionary, CC BY-SA 4.0.