astigmatism什么意思、怎么读？单词用法、记忆法、发音音标、反义词辨析、词语翻译、例句造句

astigmatism 音标：[əˈstɪgmətɪzəm]

n.散光；

◆记忆方法一：
词根词缀记忆法：astigmatism n 散光（a 无+stigmat斑点+ism…看不见斑点…散光）,“ism”表示“疾病”

N-UNCOUNT. （眼睛）散光. If someone has astigmatism, the front of their eye has a slightly irregular shape, so they cannot see properly.