单词 | anastigmatism |
释义 | anastigmat /an-ə-stigˈ-mat or ən-asˈtig-mat/nounA lens specially designed to avoid the focusing defect of astigmatism ORIGIN: Gr an- (privative), and astigmatic anastigmatˈic /an-ə-/ adjective Free from astigmatism anastigˈmatism noun |
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