Meanings
plural lilac chasers
- An optical illusion involving 12 pink blurred discs arranged in a circle around a small black, central cross on a grey background. The brief disappearance of each disc in turn causes the observer to see a gap running around the circle of pink discs; a green disc running around the circle of pink discs in place of the gap; or the green disc running around on the grey background, with the pink discs having disappeared in sequence.
Synonyms: Pac-Man illusion
Synonyms & antonyms
nounAn optical illusion involving 12 pink blurred discs arranged in a circle around a small black, central cross on a grey background. The brief disappearance of each disc in turn causes the observer to see a gap running around the circle of pink discs; a green disc running around the circle of pink discs in place of the gap; or the green disc running around on the grey background, with the pink discs having disappeared in sequence.
Cite this entry
lilac chaser. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/lilac%20chaser
“lilac chaser.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/lilac%20chaser. Accessed November 4, 2026.
WatkinsX Dictionary, s.v. “lilac chaser,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/lilac%20chaser.
Source: lilac chaser on Wiktionary, CC BY-SA 4.0.