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from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. astigmatism

from The Century Dictionary and Cyclopedia

  • n. Same as astigmatism.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. (ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea; common in nearsighted people
  • n. (optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point


Sorry, no etymologies found.


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