astigmia
noun
Key Types & categories Parts & wholes Related & opposite
- Word type
- noun
- verb
- adjective
- adverb
- Line style
- core relation
- instance, member or derived
- substance, domain or see-also
- Direction
- arrow points to the broader concept
- dashed outline: no word in this language
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Senses
Sense 1 noun
(ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea; common in nearsighted people
Types & categories
- ametropia hypernym
- keratectasia hyponym
- keratoconus hyponym
Related & opposite
- astigmatic derivation
- ophthalmology domain topic
Sense 2 noun
(optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point
Types & categories
- condition hypernym
Related & opposite
- stigmatism antonym
- astigmatic derivation
- optics domain topic
Table view of this graph
| Sense | Relation | Group | Word |
|---|---|---|---|
| 1 | derivation | Related & opposite | astigmatic |
| 1 | domain topic | Related & opposite | ophthalmology |
| 1 | hypernym | Types & categories | ametropia |
| 1 | hyponym | Types & categories | keratectasia |
| 1 | hyponym | Types & categories | keratoconus |
| 2 | antonym | Related & opposite | stigmatism |
| 2 | derivation | Related & opposite | astigmatic |
| 2 | domain topic | Related & opposite | optics |
| 2 | hypernym | Types & categories | condition |