of, relating to, or applying optics or the principles of optics.
constructed to assist sight or to correct defects in vision.
of or relating to sight or vision; visual.
of or relating to the eye.
of or relating to an optician or opticians or to their products, especially eyeglasses: an optical service.
dealing with or skilled in optics.
opticals. optical effects.
More Than Trippy: Our Favorite Viral Optical Illusions Explained
What’s not to love about optical illusions? The magical, mysterious, mind-bending visuals never cease to evoke a series of ‘“woahs” and “what the’s--.” Words usually fail to describe them. Yet, one common word that is often used is trippy, hearkening to the psychedelic days of the ‘60s and ‘70s. But, believe it or not, the first optical illusions emerged far earlier, in the 5th century B.C. They even had Aristotle bumfuzzled! From Medieval Latin, opticus means “of sight or seeing” and ludere, “to play”—thus, optical illusions are visuals that essentially “play with one’s sight.” Because these images are invested with such mysterious power, we think optical illusions are some of the coolest didactic devices known to man. They’re brilliant to look at, and they teach us to question everything. So, to honor these powerful images, we want to share with you their proper names—because, honestly, trippy only holds up in the basement. Get your brains and eyeballs ready. They will be boggled.
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Read more in this article about some frequently asked questions and fun facts related to our definitions.
Origin of optical
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for non-optical
Historical Examples of non-optical
The vision of our dreams—to keep to vision alone for greater simplicity—is non-optical vision.Human Personality and its Survival of Bodily Death
Frederick W. H. Myers
of, relating to, producing, or involving light
of or relating to the eye or to the sense of sight; optic
(esp of a lens) aiding vision or correcting a visual disorder
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Online Etymology Dictionary, © 2010 Douglas Harper
Relating to vision or the eyes.
Relating to optics.
Relating to or using visible light.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.