Look up: optical

1. 
   Optical
   That part of the electromagnetic spectrum covering the spectral range from the far-infrared to the ultra-violet. It is a superset of the visible and infrared spectral regimes.
   Found on http://www.coseti.org/glossary.htm
   
   
2. 
   optical
   [adj] - of or relating to or involving light or optics
   Found on http://www.webdictionary.co.uk/definitio
   
   
3. 
   optical
   an effect that used to be carried out in-camera: fade in, fade out, dissolve (aka mix)
   Found on http://www.animationpost.co.uk/doping/gl
   
   
4. 
   optical
   Using light.
   Found on http://www.micro2000uk.co.uk/hardware_gl
   
   
5. 
   optical
   1. Of or pertaining to vision or sight. 'The moon, whose orb Through optic glass the Tuscan artist views.' (Milton) ... 2. Of or pertaining to the eye; ocular; as, the optic nerves (the first pair of cranial nerves) which are distributed to the retina. ... 3. Relating to the science of optics; as, optical works. ... <optics> Optic angle, a gradu ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
6. 
   optical
   (op´tĭ-kәl) visual; see vision.
   Found on http://www.mercksource.com/pp/us/cns/cns
   
   
7. 
   Optical
   • (a.) Of or pertaining to vision or sight. • (a.) Of or pertaining to the eye; ocular; as, the optic nerves (the first pair of cranial nerves) which are distributed to the retina. See Illust. of Brain, and Eye. • (a.) Relating to the science of optics; as, optical works.
   Found on http://thinkexist.com/dictionary/meaning