English noun: astigmia | |||
1. | astigmia (state) (ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea; common in nearsighted people | ||
Synonyms | astigmatism | ||
Broader (hypernym) | ametropia | ||
Narrower (hyponym) | keratectasia, keratoconus | ||
Domain category | ophthalmology | ||
2. | astigmia (state) (optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point | ||
Synonyms | astigmatism | ||
Broader (hypernym) | condition, status | ||
Domain category | optics | ||
Antonyms | stigmatism | ||