astigmatism

noun [U]

/əˈstɪɡ.mə.tɪ.zəm/

Definition

› a fault in the lens of the eye that reduces the quality of sight, especially a fault that stops the eye from focusingEyesight, glasses and lensesUsing the eyesThe eye and surrounding areaOptics, microscopy and lasers astigmatic

/ˌæs.tɪɡˈmæt.ɪk/

/-ˈmæt̬-/ adjective Eyesight, glasses and lensesUsing the eyesThe eye and surrounding areaOptics, microscopy and lasers

(Definition of astigmatism noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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to get rid of something or someone that is not wanted or needed

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