Cataract Cat"a*ract, n. [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.] 1. A great fall of water over a precipice; a large waterfall. [1913 Webster]

2. (Surg.) 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. [1913 Webster]

3. (Mach.) A kind of hydraulic brake for regulating the action of pumping engines and other machines; -- sometimes called {dashpot}. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • dashpot — dash pot , dash pot dash pot(d[a^]sh p[o^]t ), n. (Mach.) a mechanical damping device containing a piston that moves in a fluid filled chamber to serve as a pneumatic or hydraulic cushion for a falling weight, as in the valve gear of a steam… …   The Collaborative International Dictionary of English

  • Dashpot — A dashpot is a mechanical device, a damper which resists motion via viscous friction. The resulting force is proportional to the velocity, but acts in the opposite direction, slowing the motion and absorbing energy. It is commonly used in… …   Wikipedia

  • dashpot — A mechanical, hydraulic, or pneumatic damper used to cushion or slow down mechanical movement by restricting the flow of viscous fluid. Dashpots are used in shimmy dampers and in some power control systems, where they come into operation at high… …   Aviation dictionary

  • dashpot — /ˈdæʃpɒt/ (say dashpot) noun a device for damping vibrations or slowing down motion, consisting of a piston attached to the part whose movements are to be damped and fitted into a cylinder containing a fluid such as oil or air …   Australian English dictionary

  • dashpot — slopintuvas statusas T sritis automatika atitikmenys: angl. damper; dashpot vok. Dämfungsvorrichtung, f; Dämpfer, m; Schwingungsdämpfer, m rus. амортизатор, m; демпфер, m; успокоитель, m pranc. amortisseur, m; damper, m; suppresseur, m …   Automatikos terminų žodynas

  • dashpot — noun Date: 1861 a device for cushioning or damping a movement (as of a mechanical part) to avoid shock …   New Collegiate Dictionary

  • dashpot — /dash pot /, n. a device for cushioning, damping, or reversing the motion of a piece of machinery, consisting of a cylinder in which a piston operates to create a pressure or vacuum on an enclosed gas or to force a fluid in or out of the chamber… …   Universalium

  • dashpot — noun A mechanical damping device consisting of a piston that moves through a viscous fluid (usually oil); used, in conjunction with a spring, in shock absorbers …   Wiktionary

  • dashpot — noun a device for damping shock or vibration …   English new terms dictionary

  • dashpot —   n. shock resisting device, using air or liquid …   Dictionary of difficult words

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