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cataract

Syllabification: (cat·a·ract)
Pronunciation: /ˈkatəˌrakt/

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Definition of cataract

noun

  • 1a large waterfall.
  • a sudden rush of water; a downpour:the rain enveloped us in a deafening cataract
  • 2a medical condition in which the lens of the eye becomes progressively opaque, resulting in blurred vision:she had cataracts in both eyes

Origin:

late Middle English: from Latin cataracta 'waterfall, floodgate', also 'portcullis' (medical cataract (sense 2) probably being a figurative use of this), from Greek kataraktēs 'down-rushing', from katarassein, from kata- 'down' + arassein 'strike, smash'

cataract in other Oxford dictionaries

Definition of cataract in the British & World English dictionary
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