anastigmatic[an as′tig mat′ik, an′ə stig-]
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
free from, or corrected for, astigmatism; specif., designating a compound lens made up of one converging and one diverging lens so that the astigmatism of one is neutralized by the equal and opposite astigmatism of the other
Used by arrangement with John Wiley & Sons, Inc.
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Free from astigmatism. Used of a compound lens in which the separate components compensate for the astigmatic effects of each lens.