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used in a sentence
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Definition relating to sight or light

More rarely, optics can be used as a noun to denote a lens — such as is found in a microscope or camera.
  • an optical illusion
  • the optic nerve
  • fiber-optic cable to the home
  • corrected the Hubble telescope's optics
  • But, on the other hand, they connect diagonally, and the sprawling outlines run off in great slanting waves of optic horror, like a lot of wallowing seaweeds in full chase.
    Charlotte Perkins Gilman  --  The Yellow Wallpaper
  • optic = relating to sight
  • He experiences himself, his thoughts and feelings, as something separated from the rest—a kind of optical delusion of his consciousness.
    Neal Shusterman  --  Unwind
  • He fiddled with optical illusions, and took to wearing his shoes too small and his clothes too big.
    Michael Lewis  --  The Blind Side
  • Prisoner 66730 was instructed to report for an optical fitting at 6:30 the following morning.
    Corrie ten Boom  --  The Hiding Place
  • If it were his eyeballs only that were affected, or if his optic nerve were not wholly destroyed, the explanation was simple.
    Jack London  --  Sea Wolf
  • The hairpin crown was an optical illusion: it's just hair, graying and cropped short.
    Margaret Atwood  --  Cat's Eye
  • She focused on me as if I were a clever optical illusion.
    Rick Riordan  --  The Hidden Oracle
  • But as his brain swelled with internal bleeding, bone or bullet fragments that were in his eye severed his optic nerves.
    Chris Kyle  --  American Sniper
  • The train situation is not the same as an optical illusion.
    Susanna Kaysen  --  Girl Interrupted
  • Surveying instruments and helmet binoculars were all we turned up, plus optical instruments confiscated in Terran labs.
    Robert A. Heinlein  --  The Moon is a Harsh Mistress
  • Finding clear evidence that the right eye's optic nerve has somehow been cut, he decides to reexamine.
    Bill O'Reilly and Martin Dugard  --  Killing Lincoln
  • At the time I will confess that I thought chiefly of the Philosophical Transactions and my own seventeen papers upon physical optics.
    H.G. Wells  --  The Time Machine
  • At first Vic thought he hadn't seen right; it was some sort of optical illusion.
    Stephen King  --  Cujo
  • It even got so that almost at will I could produce an optical illusion.
    Robert Penn Warren  --  All the King's Men
  • It's only an optical what-do-you-call-it.
    C.S. Lewis  --  Prince Caspian: The Return to Narnia
  • Thelma was an optical illusion, a woman's head on top of a stepladder; and she had been golden-haired and young, and had smiled invitingly.
    Eudora Welty  --  The Collected Stories of Eudora Welty

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