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/əˈstɪɡmətɪzm̩/ · noun
(optics) A defect of a lens such that light rays coming from a point do not meet at a focal point so that the image is blurred..
Use astigmatism when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Astigmatism means (optics) A defect of a lens such that light rays coming from a point do not meet at a focal point so that the image is blurred..
Common synonyms include astigmia.
Possible antonyms include stigmatism.
Use astigmatism where its definition matches the intended context.
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