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optical

[op-ti-kuh l] /ˈɒp tɪ kəl/
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
1560-1570
1560-70; optic + -al1
Related forms
optically, adverb
nonoptical, adjective
nonoptically, adverb
suboptical, adjective
suboptically, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for more optical

optical

/ˈɒptɪkəl/
adjective
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
Derived Forms
optically, adverb
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
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Word Origin and History for more optical

optical

adj.

1560s, from optic + -al (1). Of abstract art, from 1964. Related: Optically.

Online Etymology Dictionary, © 2010 Douglas Harper
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more optical in Science
optical
  (ŏp'tĭ-kəl)   
  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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