anastigmatic

[ an-uh-stig-mat-ik, a-nas-tig- ]
/ ˌæn ə stɪgˈmæt ɪk, æˌnæs tɪg- /

adjective Optics.

(of a lens) not having astigmatism; forming point images of a point object located off the axis of the lens; stigmatic.

Origin of anastigmatic

First recorded in 1885–90; an-1 + astigmatic

British Dictionary definitions for anastigmatic

anastigmatic
/ (ˌænəstɪɡˈmætɪk) /

adjective

(of a lens or optical device) not astigmatic Also: stigˈmatic