optical
Americanadjective
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of, relating to, or applying optics or the principles of optics.
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constructed to assist sight or to correct defects in vision.
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of or relating to sight or vision; visual.
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of or relating to the eye.
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of or relating to an optician or opticians or to their products, especially eyeglasses.
an optical service.
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dealing with or skilled in optics.
noun
adjective
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of, relating to, producing, or involving light
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of or relating to the eye or to the sense of sight; optic
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(esp of a lens) aiding vision or correcting a visual disorder
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Relating to vision or the eyes.
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Relating to optics.
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Relating to or using visible light.
Other Word Forms
Etymology
Origin of optical
Explanation
Anything that's optical has something to do with sight. You could call your glasses an optical aid, since they help you see things more clearly. Optical assistance comes in many forms, from glasses and contacts to binoculars and telescopes. All of these optical devices help magnify or clarify your vision. Using a big telescope to view the stars is known as optical astronomy, as opposed to the kind of astronomy that's practiced using radio signals or math. An optical illusion is a trick played on your eyes, when what they perceive is different from what is actually there.
Vocabulary lists containing optical
Common Senses: Op, Ops, Opt ("Sight")
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Workshop 1, Part 1
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Punching the Air
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Under these conditions, the interaction between light and sound becomes more than 1000 times stronger than it is in standard optical fibers.
From Science Daily ● Aug. 22, 2026
A related process plays an important role in manufacturing optical fibers.
From Science Daily ● Aug. 22, 2026
Despite competition, T&S could benefit from an undersupplied high-end optical connector market, potentially supporting sequential growth in 2H 2026 and 2027.
From The Wall Street Journal ● Aug. 19, 2026
Rising shipments of high-end optical transceivers and growing adoption of technologies such as near-field packing and co-packaged optics are likely growth drivers, they say in a note.
From The Wall Street Journal ● Aug. 19, 2026
Optical fibers, by contrast, can carry very high-frequency optical pulses on the same individual fiber without substantial signal degradation for many, many miles.
From "The World Is Flat" by Thomas L. Friedman
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
