Definitions for Cataractˈkæt əˌrækt

This page provides all possible meanings and translations of the word Cataract

Princeton's WordNetRate this definition:(0.00 / 0 votes)

  1. cataract(noun)

    an eye disease that involves the clouding or opacification of the natural lens of the eye

  2. cataract(noun)

    a large waterfall; violent rush of water over a precipice

WiktionaryRate this definition:(0.00 / 0 votes)

  1. cataract(Noun)

    A waterspout

  2. cataract(Noun)

    A large waterfall; steep rapids in a river.

    The cataracts on the Nile helped compartiment Upper Egypt

  3. cataract(Noun)

    A flood of water

  4. cataract(Noun)

    An overwhelming downpour or rush

    His cataract of eloquence

  5. cataract(Noun)

    A disease of the eye causing its opacity and, unless treated, leading to blindness.

  6. Origin: From cataracta 'waterfall, portcullis', from καταράκτης, from καταράσσω.

Webster DictionaryRate this definition:(0.00 / 0 votes)

  1. Cataract(noun)

    a great fall of water over a precipice; a large waterfall

  2. Cataract(noun)

    an opacity of the crystalline lens, or of its capsule, which prevents the passage of the rays of light and impairs or destroys the sight

  3. Cataract(noun)

    a kind of hydraulic brake for regulating the action of pumping engines and other machines; -- sometimes called dashpot

  4. Origin: [L. cataracta, catarracles, a waterfall, Gr. , , fr. to break down; in the passive, to fall or rush down (of tumors) to burst; kata` down + to break.]

FreebaseRate this definition:(0.00 / 0 votes)

  1. Cataract

    A cataract is a clouding of the lens inside the eye which leads to a decrease in vision. It is the most common cause of blindness and is conventionally treated with surgery. Visual loss occurs because opacification of the lens obstructs light from passing and being focused on to the retina at the back of the eye. It is most commonly due to biological aging but there are a wide variety of other causes. Over time, yellow-brown pigment is deposited within the lens and this, together with disruption of the normal architecture of the lens fibers, leads to reduced transmission of light, which in turn leads to visual problems. Those with cataract commonly experience difficulty appreciating colors and changes in contrast, driving, reading, recognizing faces, and experience problems coping with glare from bright lights.

U.S. National Library of MedicineRate this definition:(0.00 / 0 votes)

  1. Cataract

    Partial or complete opacity on or in the lens or capsule of one or both eyes, impairing vision or causing blindness. The many kinds of cataract are classified by their morphology (size, shape, location) or etiology (cause and time of occurrence). (Dorland, 27th ed)

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