Bible Dictionaries
Anastigmatic

Webster's Dictionary

(a.) Not astigmatic; - said esp. 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.

Bibliography Information
Webster, Noah. Entry for 'Anastigmatic'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​a/anastigmatic.html. 1828.