anastigmatic
American Heritage Dictionary:
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an·as·tig·mat·ic
(ăn-ăs'tĭg-măt'ĭk) 
adj.
Free from astigmatism. Used of a compound lens in which the separate components compensate for the astigmatic effects of each lens.
adj.
Free from astigmatism. Used of a compound lens in which the separate components compensate for the astigmatic effects of each lens.
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American Heritage Dictionary
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
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