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

a•stig•ma•tism n.

Ophthalmologya failure of the eye to see properly because parallel rays of light from the outside image do not line up and meet at a single point on the retina: [uncountable]has astigmatism in one eye.[countable; usually singular]had a slight astigmatism.

as•tig•mat•ic adj.

a•stig•ma•tism n.

Also called a•stig•mi•a [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.

Opticsan aberration of a lens or other optical system in which the image of a point is spread out along the axis of the system.

astigmat(ic) + -ism 1840–50

astigmatism /əˈstɪɡməˌtɪzəm/, astigmia /əˈstɪɡmɪə/ n

a defect of a lens resulting in the formation of distorted images; caused by the curvature of the lens being different in different planes
faulty vision resulting from defective curvature of the cornea or lens of the eye

单词	astigmatism
释义	WordReference Random House Learner's Dictionary of American English © 2024 a•stig•ma•tism /əˈstɪgməˌtɪzəm/USA pronunciation n. Ophthalmologya failure of the eye to see properly because parallel rays of light from the outside image do not line up and meet at a single point on the retina: [uncountable]has astigmatism in one eye.[countable; usually singular]had a slight astigmatism. as•tig•mat•ic /ˌæstɪgˈmætɪk/USA pronunciation adj. WordReference Random House Unabridged Dictionary of American English © 2024 a•stig•ma•tism (ə stig′mə tiz′əm),USA pronunciation n. Also called a•stig•mi•a (ə stig′mē ə).USA pronunciation [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. Opticsan aberration of a lens or other optical system in which the image of a point is spread out along the axis of the system. astigmat(ic) + -ism 1840–50 Collins Concise English Dictionary © HarperCollins Publishers:: astigmatism /əˈstɪɡməˌtɪzəm/, astigmia /əˈstɪɡmɪə/ n a defect of a lens resulting in the formation of distorted images; caused by the curvature of the lens being different in different planes faulty vision resulting from defective curvature of the cornea or lens of the eye
随便看	backrush backs backsaw backscatter backscattering back score back scratcher backscratcher back scratching back seat backseat back-seat driver backseat driver backseat driving backset back shaft backsheesh back shift backshore backside backside-front backside-to backsight backslap backslapper