English dictionary
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English noun: astigmatism | |||
| 1. | astigmatism (state) (ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea; common in nearsighted people | ||
| Synonyms | astigmia | ||
| Broader (hypernym) | ametropia | ||
| Narrower (hyponym) | keratectasia, keratoconus | ||
| Domain category | ophthalmology | ||
| 2. | astigmatism (state) (optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point | ||
| Synonyms | astigmia | ||
| Broader (hypernym) | condition, status | ||
| Domain category | optics | ||
| Antonyms | stigmatism | ||
Based on WordNet 3.0 copyright © Princeton University.
Web design: Orcapia v/Per Bang. English edition: .
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Web design: Orcapia v/Per Bang. English edition: .
2024 onlineordbog.dk