anastigmatic

anastigmatic

[an-uh-stig-mat-ik, a-nas-tig-]
adjective Optics.
(of a lens) not having astigmatism; forming point images of a point object located off the axis of the lens; stigmatic.

Origin:
1885–90; an-1 + astigmatic

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World English Dictionary
anastigmatic (ˌænəstɪɡˈmætɪk)
 
adj
Also: stigˈmatic (of a lens or optical device) not astigmatic

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