cataract definition

  • noun:
    • A large or large waterfall.
    • a fantastic downpour; a deluge.
    • Pathology Opacity for the lens or capsule for the eye, causing disability of eyesight or loss of sight.
    • A waterspout
    • A large waterfall; steep rapids in a river.
    • A flood of water
    • a formidable downpour or dash
    • an illness of the attention causing its opacity and, unless treated, resulting in blindness.
    • a good fall of water over a precipice; a large waterfall.
    • An opacity of crystalline lens, or of its pill, which prevents the passage through of the rays of light and impairs or destroys the sight.
    • a type of hydraulic brake for regulating the action of pumping machines as well as other devices; -- occasionally called dashpot.
    • A descent of water over a steeply sloping yet not perpendicular surface, whilst the cataracts for the Nile additionally the Orinoco; for this reason, especially in poetical usage, any huge waterfall, as that of the Niagara.
    • Any mad rush or downpour of liquid.
    • an ailment of attention, characterized by opacity of this lens.
    • In fortification, a herse.
    • A regulator for single-acting steam-engines, devised by Smeaton.
    • The plungeon, some sort of cormorant: so named because of its violent downward flight in seizing its prey.
    • In mech., a device for regulating the sheer number of shots per minute in a Cornish pumping-engine, when the velocity of a falling body weight, or a spring-weighted piston, is governed by the circulation of water through a variable orifice, whoever cross-section is controlled at might, so the amount of the swing and/or period between strokes could be made longer or reduced.
    • a sizable waterfall; violent rush of water over a precipice
    • a watch condition which involves the clouding or opacification of this normal lens regarding the eye
  • others:
    • to make cataracts.
    • To pour, like a cataract.

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