• WordNet 3.6
    • n piezometer a measuring instrument for measuring high pressures
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Webster's Revised Unabridged Dictionary
    • Piezometer (Physics) A gauge connected with a water main to show the pressure at that point.
    • Piezometer (Physics) An instrument for measuring the compressibility of liquids.
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Century Dictionary and Cyclopedia
    • n piezometer Any instrument for ascertaining or testing pressure.
    • n piezometer An instrument for showing the compressibility of water or other liquid, and the degree of such compressibility under varying pressures. A common form (see figure) consists of a strong glass cylinder, within which is supported a small vessel (C) with a graduated stem containing the liquid under experiment, also a thermometer (T) and manometer (M). The pressure is exerted by the piston moved by a screw at the top, and transmitted by the water with which the cylinder is filled to the liquid in the vessel C. The amount of this pressure is measured by the manometer. The compressibility is shown by the fall of the liquid (and index) in the graduated stem, and its amount can be readily calculated if the capacity of C, in terms of these scale-divisions, is known.
    • n piezometer An instrument consisting essentially of a vertical tube inserted into a water-main, to show the pressure of the fluid at that point, by the height to which it ascends in the tube of the piezometer.
    • n piezometer A sounding-apparatus in which advantage is taken of the compression of air in a tube by the pressure of the water at great depths to indicate the depth of the water.
    • n piezometer An instrument for testing the pressure of gas in the bore of a gun.
    • n piezometer An instrument for measuring the degree of resistance of the tissues of the body.
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Chambers's Twentieth Century Dictionary
    • n Piezometer pī-e-zom′e-tėr an instrument for measuring the compressibility of liquids.
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Webster's Revised Unabridged Dictionary
Gr. to press + -meter,: cf. F. piézomètre,
Chambers's Twentieth Century Dictionary
Gr. piezein, to press, metron, a measure.


In news:

Carroll Water Department superintendent Terry Kluver Monday afternoon lowers tape in the piezometer, the device used to measure the level of the city's aquifer .