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| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
manometer ma·nom·e·ter (mā-nŏm'ĭ-tər)
n.
An instrument that is used for measuring the pressure of liquids and gases.
manometer (mə-nŏm'ĭ-tər) Pronunciation Key
(click for larger image in new window) An instrument used to measure the pressure exerted by liquids and gases. Pressure is exerted on one end of a U-shaped tube partially filled with liquid; the liquid is displaced upwards on the other side of the tube by a distance proportional to the pressure difference on each side of the tube. |