from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Free from astigmatism. Used of a compound lens in which the separate components compensate for the astigmatic effects of each lens.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Free from astigmatism

from the GNU version of the Collaborative International Dictionary of English

  • adj. Not astigmatic; free of astigmatism; -- pertaining to a lens or lens system, and used especially of a lens system which consists of a converging lens and a diverging lens of equal and opposite astigmatism but different focal lengths, and sensibly free from astigmatism.

from The Century Dictionary and Cyclopedia

  • Not astigmatic: applied to a lens.

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

  • adj. pertaining to a lens or lens system free of astigmatism (able to form point images)
  • adj. not astigmatic


Sorry, no etymologies found.



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