non-astigmatic
|non-as-tig-mat-ic|
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/nɑnˌæstɪɡˈmætɪk/
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/nɒnˌæstɪɡˈmætɪk/
(astigmatic)
fails to focus to a point
Etymology
'non-astigmatic' is formed in modern English by the negative prefix 'non-' plus 'astigmatic'. 'Astigmatic' ultimately comes from Greek via New Latin and French.
'astigmatic' derives from New Latin 'astigmatismus' and French 'astigmatique', from Greek elements (a- 'not' + stigmē 'point, mark') used in medical/optical senses; English 'astigmatic' developed in the 19th century and 'non-' was later added in English to form 'non-astigmatic'.
Initially the Greek-based term referred to the absence of a single focal point (literally 'not-pointed'); over time it became a medical/optical term for the condition of astigmatism and its negation came to mean 'without astigmatism'.
Meanings by Part of Speech
Adjective 1
not affected by astigmatism; having no astigmatism (of an eye, lens, or optical system), so that light focuses properly and vision or the image is undistorted.
A non-astigmatic lens produces a clear image across the field.
Synonyms
Antonyms
Last updated: 2025/10/02 13:13