Definition of astigmatism Astigmatism
/ʌstɪˈgmʌtɪˌzʌm/ - [ustigmutizum] - a•stig•ma•tism
We found 8 definitions of astigmatism from 6 different sources.
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What does astigmatism mean?
WordNet
NounPlural: astigmatisms |
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| astigmatism - (ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea; common in nearsighted people | ||
| astigmia | ||
| ametropia (ophthalmology) faulty refraction of light rays in the eye as in astigmatism or myopia | ||
| ophthalmology the branch of medicine concerned with the eye and its diseases | ||
| keratectasia abnormal bulging of the cornea of the eye | ||
| astigmatism - (optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point | ||
| astigmia | ||
| status, condition the relative position or standing of things or especially persons in a society; "he had the status of a minor"; "the novel attained the status of a classic"; "atheists do not enjoy a favorable position in American life" | ||
| optics optical properties; "the optics of a telescope" | ||
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Wiktionary 
Webster DictionaryWebster's Unabridged Dictionary 📘
- astigmatism (n.)
A defect of the eye or of a lens, in consequence of which the rays derived from one point are not brought to a single focal point, thus causing imperfect images or indistinctness of vision.
OmegaWiki DictionaryOmegaWiki Dictionary Ω
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astigmatism
A distortion of the image on the retina caused by irregularities in the cornea or lens.
Chambers DictionaryChamber's 20th Century Dictionary 📕
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astigmatism
a-stig′ma-tizm, n. a defective condition of the eye, in which rays proceeding to the eye from one point are not correctly brought to a focus at one point.—adj. Astigmat′ic. [Gr. a, neg., and stigma, stigmat-os, a point.]
Part of speech
🔤- astigmatism, noun, singular of astigmatisms.
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