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BNC: 19411 COCA: 14871

cataract

noun
/ˈkætərækt/
/ˈkætərækt/
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  1. a medical condition that affects the lens of the eye so that you gradually lose your sight白内障
    • A cataract can be removed under local anaesthetic.白内障可以在局部麻醉情况下摘除。
    Topics Illnessc2
    Oxford Collocations Dictionaryverb + cataract
    • have
    • develop
    • remove
    cataract + noun
    • operation
    • surgery
    • removal
    See full entry
  2. (literary) a large, steep waterfall大瀑布
  3. Word Originlate Middle English: from Latin cataracta ‘waterfall, floodgate’, also ‘portcullis’ (medical sense (1) probably being a figurative use of this), from Greek kataraktēs ‘down-rushing’, from katarassein, from kata- ‘down’ + arassein ‘strike, smash’.

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