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cataract

play
noun cat·a·ract \ˈka-tə-ˌrakt\

Simple Definition of cataract

  • medical : a condition in which a part of your eye (called the lens) becomes cloudy and you cannot see well

  • : a large waterfall

Full Definition of cataract

  1. 1 [Middle English, from Middle French or Medieval Latin; Middle French catharacte, from Medieval Latin cataracta, from Latin, portcullis] :  a clouding of the lens of the eye or of its surrounding transparent membrane that obstructs the passage of light

  2. 2 a obsolete :  waterspout b :  waterfall; especially :  a large one over a precipice c :  steep rapids in a river d :  downpour, flood <cataracts of rain> <cataracts of information>

cat·a·rac·tous play \ˌka-tə-ˈrak-təs\ adjective

Examples of cataract

  1. <the roaring cataract is one of the park's most majestic sights>

  2. <in spring the melting snows usually produce a cataract that inundates the valley>



Origin of cataract

Latin cataracta waterfall, portcullis, from Greek kataraktēs, from katarassein to dash down, from kata- + arassein to strike, dash


First Known Use: 14th century


CATARACT Defined for Kids

cataract

play
noun cat·a·ract \ˈka-tə-ˌrakt\

Definition of cataract

  1. 1 :  a clouding of the lens of the eye or of the cover around the lens that blocks the passage of light

  2. 2 :  a large waterfall

  3. 3 :  a sudden rush or flow like a waterfall




Medical Dictionary

cataract

play
noun cat·a·ract \ˈkat-ə-ˌrakt\

Medical Definition of cataract

  1. :  a clouding of the lens of the eye or its surrounding transparent membrane that obstructs the passage of light





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