optical

[op-ti-kuhl]
adjective
1.
of, pertaining to, or applying optics or the principles of optics.
2.
constructed to assist sight or to correct defects in vision.
3.
of or pertaining to sight or vision; visual.
4.
of or pertaining to the eye.
5.
of or pertaining to an optician or opticians or to their products, especially eyeglasses: an optical service.
6.
dealing with or skilled in optics.
noun
7.
opticals, optical effects.

Origin:
1560–70; optic + -al1

optically, adverb
nonoptical, adjective
nonoptically, adverb
suboptical, adjective
suboptically, adverb
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
optical (ˈɒptɪkəl)
 
adj
1.  of, relating to, producing, or involving light
2.  of or relating to the eye or to the sense of sight; optic
3.  (esp of a lens) aiding vision or correcting a visual disorder
 
'optically
 
adv

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

optical
1560s, from optic.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
optical   (ŏp'tĭ-kəl)  Pronunciation Key 
  1. Relating to vision or the eyes.

  2. Relating to optics.

  3. Relating to or using visible light.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences for optically
This only applies to materials that are optically anisotropic.
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