The Collaborative International Dictionary
Anastigmatic
Anastigmatic \An*as`tig*mat"ic\, a. [Pref. an-not + astigmatic.] (Optics) 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.
Wiktionary
anastigmatic
a. (context of the eye or a lens system English) Free from astigmatism
WordNet
anastigmatic
adj. pertaining to a lens or lens system free of astigmatism (able to form point images) [syn: stigmatic]
not astigmatic [syn: stigmatic] [ant: astigmatic]