leaning tower illusion

noun

An optical illusion where, given a pair of identical images of an object rising in perspective, the one on the right appears to be leaning more.

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Meanings

nounleaning tower illusion (plural leaning tower illusions)

plural leaning tower illusions

  1. An optical illusion where, given a pair of identical images of an object rising in perspective, the one on the right appears to be leaning more.

Origin

Originally demonstrated with a picture of the Leaning Tower of Pisa.

Full word history & related roots →
Cite this entry
APA

leaning tower illusion. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/leaning%20tower%20illusion

MLA

“leaning tower illusion.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/leaning%20tower%20illusion. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “leaning tower illusion,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/leaning%20tower%20illusion.

Source: leaning tower illusion on Wiktionary, CC BY-SA 4.0.