Meanings
plural astigmatisms
- countableuncountableengineeringA 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.
Synonyms & antonyms
noun(ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea; common in nearsighted people
noun(optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point
Synonym sets from Open English WordNet, CC BY 4.0.
Origin
- Ancient Greekστίγμα“mark, point”
- Englishastigmatism
From a- (negative prefix) + stem of Ancient Greek στίγμα (stígma, “mark, point”) + -ism. Coined by English polymath William Whewell in 1846.
More words from Ancient Greek
Full word history & related roots →Translations
Arabic لَابُؤْرِيّة, اللَانُقَطِيَّة
- لَابُؤْرِيّة (lābuʔriyya)defect of a lens
- اللَانُقَطِيَّة (al-lānuqaṭiyya)defect of a lens
Catalan astigmatisme
- astigmatismedisorder of the vision
Chinese Mandarin 像散, 散光
- 像散 (xiàngsàn)defect of a lens
- 散光 (sǎnguāng)disorder of the vision
- 亂視 /乱视 (luànshì)disorder of the vision
Czech astigmatismus
- astigmatismusdisorder of the vision
Danish astigmatisme, astigmatisme
- astigmatismedefect of a lens
- astigmatismedisorder of the vision
Finnish astigmaattisuus, hajataittoisuus
- astigmaattisuusdefect of a lens
- hajataittoisuusdisorder of the vision
French astigmatisme
- astigmatismedisorder of the vision
German Astigmatismus, Astigmatismus
- Astigmatismusdefect of a lens
- Astigmatismusdisorder of the vision
Greek αστιγματισμός, αστιγματισμός
- αστιγματισμός (astigmatismós)defect of a lens
- αστιγματισμός (astigmatismós)disorder of the vision
Indonesian astigmatisme, astigmatisme
- astigmatismedefect of a lens
- astigmatismedisorder of the vision
Irish aistiogmatacht, aistiogmatacht
- aistiogmatachtdefect of a lens
- aistiogmatachtdisorder of the vision
Italian astigmatismo, astigmatismo
- astigmatismodefect of a lens
- astigmatismodisorder of the vision
Japanese 非点収差, 乱視
- 非点収差 (hiten shūsa)defect of a lens
- 乱視 (ranshi)disorder of the vision
Malay astigmatisme
- astigmatismedefect of a lens
Māori arotahi takarepa, arotahi takarepa
- arotahi takarepadefect of a lens
- arotahi takarepadisorder of the vision
Norwegian Bokmål astigmatisme, astigmatisme
- astigmatismedefect of a lens
- astigmatismedisorder of the vision
Polish astygmatyzm, astygmatyzm
- astygmatyzmdefect of a lens
- astygmatyzmdisorder of the vision
Portuguese astigmatismo, astigmatismo
- astigmatismodefect of a lens
- astigmatismodisorder of the vision
Romanian astigmatism, astigmatism
- astigmatismdefect of a lens
- astigmatismdisorder of the vision
Russian астигмати́зм, астигмати́зм
- астигмати́зм (astigmatízm)defect of a lens
- астигмати́зм (astigmatízm)disorder of the vision
Spanish astigmatismo, astigmatismo
- astigmatismodefect of a lens
- astigmatismodisorder of the vision
Swedish astigmatism, astigmatism
- astigmatismdefect of a lens
- astigmatismdisorder of the vision
Thai สายตาเอียง, สายตาเอียง
- สายตาเอียง (sǎai-dtaa-iiang)defect of a lens
- สายตาเอียง (sǎai-dtaa-iiang)disorder of the vision
Turkish astigmatizm, astigmatizm
- astigmatizmdefect of a lens
- astigmatizmdisorder of the vision
Welsh astigmatedd
- astigmatedddisorder of the vision
Cite this entry
astigmatism. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/astigmatism
“astigmatism.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/astigmatism. Accessed November 3, 2026.
WatkinsX Dictionary, s.v. “astigmatism,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/astigmatism.
Source: astigmatism on Wiktionary, CC BY-SA 4.0.