WordReference Random House Unabridged Dictionary of American English © 2026
Zoll′ner illu′sion
(tsul′nər; Ger. tsœl′nər),USA pronunciation [Psychol.]
- a spatial illusion in which parallel lines intersected by short oblique lines are perceived as converging or diverging.
- named after J. K. French. Zöllner, 19th-century German physicist 1950–55