Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- n. A visually perceived image that is deceptive or misleading.
Wiktionary
- n. An image that is visually deceptive or misleading.
WordNet 3.0
- n. an optical phenomenon that results in a false or deceptive visual impression
Examples
““second inequality,” i.e. the optical illusion caused by the earth's annual motion, but first revived an old idea of his own that for the sake of uniformity the sun, or as he preferred to regard it, the earth, should have an equant as well as the planets.”
“Anyone less motivated would not have found the ancient fumarole, its volcanic vapors long since spent, for it lay behind a seemingly uninterrupted wall of basalt formed in tall columnar crystals; nose down, Publius Vagiennius sniffed his way around an optical illusion and found a huge chimney.”
Lists
These user-created lists contain the word ‘optical illusion’.
Tweets
Looking for tweets for optical illusion.
gangerh It isn't - it just looks like one. Feb 16, 2008