Spelling Bee Hive found 1 result for zollner illusion. This page contains the same results as searching for that word in the app.
Zollner illusion - noun; Level 9; origin: German + Latin; pronunciation: ˈtsə̄lnə(r)-i-ˈlü-zhən, -ˈlyü-. a visual effect in which parallel lines seem to converge or diverge because short diagonal strokes cross them.
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