optical illusion

noun

1. illusion4

optical illusion

noun

1. an object causing a false visual impression
2. an instance of deception by such an object

Word History and Origins

Origin of optical illusion¹

First recorded in 1785–95

Example Sentences

Beyond its mental effects, he was immediately drawn to the aesthetics — swirling colors, optical illusions and surreal depictions of cognition — associated with it.

From Los Angeles Times

We're all familiar with optical illusions; some are novelties, while some are all around us.

From Science Daily

Sun halos are optical illusions created when ice crystals form in the correct shape in the upper atmosphere, usually accompanying thin, wispy cirrus clouds.

From New York Times

Due to the low angle of the Sun's rays, this can appear an optical illusion, as the pink wavelengths light up the base of the cloud.

From BBC

A photo of Dodger Stadium seemingly marooned by floodwater as Tropical Storm Hilary ripped through Southern California was, in fact, an optical illusion.

From New York Times