astigmatism
A defect of a lens such that light rays coming from a point do not meet at a focal…A 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.
» Tom has astigmatism.
Meaning
2 senses(countable, uncountable)A 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.
Astigmatismus
астигмати́змastigmatízm
(optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point
(countable, uncountable)A disorder of the vision, usually due to a misshapen cornea, such that light does not focus correctly on the retina causing a blurred image.
Astigmatismus
астигмати́змastigmatízm
Examples
5 sentencesTom has astigmatism.
She wore glasses because she had astigmatism.
ruОна носила очки, потому что у нее был астигматизм.
I have an astigmatism in both eyes.
ruУ меня астигматизм на обоих глазах.
Contact lenses are more able to correct strong astigmatism.
I have astigmatism.
ruУ меня астигматизм.
deIch habe Astigmatismus.
Translations
8 languagesBy meaning 1
By meaning 1
Origin
From a- (negative prefix) + stem of Ancient Greek στίγμα (stígma, “mark, point”) + -ism. CFrom a- (negative prefix) + stem of Ancient Greek στίγμα (stígma, “mark, point”) + -ism. Coined by English polymath William Whewell in 1846.
Wiktionary, CC BY-SA 4.0 · source
Forms
plural: astigmatisms| Singular | astigmatism |
|---|---|
| Plural | astigmatisms |
regular
Synonyms
1 synonymsAntonyms
1 antonymsWord family
10 related wordsLessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable