from Wiktionary, Creative Commons Attribution/Share-Alike License
- adv. regarding or using optics
from the GNU version of the Collaborative International Dictionary of English
- adv. By optics or sight.
- adv. With reference to optics.
from The Century Dictionary and Cyclopedia
- As regards sight or the laws of sight; in accordance with or with reference to the science of optics or the use of optical instruments; by optical means.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adv. in an optical manner
Sorry, no etymologies found.