英语词汇“astigmatism”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	astigmatism
释义	astigmatism /euh stig"meuh tiz'euhm/, n. 1. Also called astigmia /euh stig"mee euh/. Ophthalm. a refractive error of the eye in which parallel rays of light from an external source do not converge on a single focal point on the retina. 2. Optics. an aberration of a lens or other optical system in which the image of a point is spread out along the axis of the system. [1840-50; ASTIGMAT(IC) + -ISM]
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