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

Origin of optical

First recorded in 1560–70; optic + -al1
Related formsop·ti·cal·ly, adverbnon·op·ti·cal, adjectivenon·op·ti·cal·ly, adverbsub·op·ti·cal, adjectivesub·op·ti·cal·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for non-optical

Historical Examples of non-optical

British Dictionary definitions for non-optical


  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 Formsoptically, 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

Word Origin and History for non-optical



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

Online Etymology Dictionary, © 2010 Douglas Harper

non-optical in Science


  1. Relating to vision or the eyes.
  2. Relating to optics.
  3. Relating to or using visible light.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.