Definify.com
Definition 2025
Müller-Lyer_illusion
Müller-Lyer illusion
English
Noun
Müller-Lyer illusion (plural Müller-Lyer illusions)

Two sets of arrows that exhibit the Müller-Lyer optical illusion. The set on the bottom shows that all the arrows are of the same length.
- An optical illusion consisting of a stylized arrow whose midpoint appears to be closer to the tail end.