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astigmatism SimpleWikiWiktionaryGoogle検索CollinsCambridgeLongmanLongman英和Learners 【 111748 】 【意味】 "[名詞] (ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea; common in nearsighted people [例] Astigmatism is a common eye problem. [例] She had astigmatism and needed glasses to correct it. [例] Astigmatism is a common eye condition that can be corrected with glasses or contact lenses. [意味] 乱視, 非点収差, 乱視眼, 乱視性, 乱視計, 乱視鏡, 無非点収差 ; [同義語] astigmia ; [上位語] ametropia ; [下位語] keratoconus, keratectasia ; [派生] astigmatic ; [同義語群] 14553590-n [名詞] (optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point [例] Astigmatism is a defect in an optical system. [例] She had astigmatism in her eyes. [意味] 非点収差, 乱視, 乱視性, 乱視計, 乱視鏡, 乱視眼, 無非点収差 ; [同義語] astigmia ; [反意語] stigmatism ; [上位語] status, condition ; [派生] astigmatic ; [同義語群] 13938899-n"