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单词 anastigmat
释义

WordReference Random House Unabridged Dictionary of American English © 2024
an•as•tig•mat  (ə nastig mat′, an′ə stigmat),USA pronunciation n. [Optics.]
  1. Opticsa compound lens corrected for the aberrations of astigmatism and curvature of field.
  • German, back formation from anastigmatisch anastigmatic
  • 1885–90

Collins Concise English Dictionary © HarperCollins Publishers::
anastigmat /æˈnæstɪɡˌmæt; ˌænəˈstɪɡmæt/ n
  1. a lens or system of lenses designed to be free of astigmatism
Etymology: 19th Century from an- + astigmatic
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更新时间:2024/9/21 10:52:59