Meanings
nounJastrow illusion (plural Jastrow illusions)
plural Jastrow illusions
- An optical illusion in which two adjacent identical curved shapes appear to be of different sizes.
Synonyms: boomerang illusion, ring-segment illusion, Wundt area illusion, Wundt-Jastrow illusion
Synonyms & antonyms
nounAn optical illusion in which two adjacent identical curved shapes appear to be of different sizes.
Origin
Attributed to the Polish-American psychologist Joseph Jastrow.
Full word history & related roots →Cite this entry
APA
Jastrow illusion. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Jastrow%20illusion
MLA
“Jastrow illusion.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Jastrow%20illusion. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “Jastrow illusion,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Jastrow%20illusion.
Source: Jastrow illusion on Wiktionary, CC BY-SA 4.0.