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Siphon :: Siphon (n.) A device, consisting of a pipe or tube bent so as to form two branches or legs of unequal length, by which a liquid can be transferred to a lower level, as from one vessel to another, over an intermediate elevation, by the action of the pressure of the atmosphere in forcing the liquid up the shorter branch of the pipe immersed in it, while the continued excess of weight of the liquid in the longer branch (when once filled) causes a continuous flow. The flow takes place only when the

Isobaric :: Isobaric (a.) Denoting equal pressure; as, an isobaric line; specifically, of or pertaining to isobars..

Indicator :: Indicator (n.) An instrument which draws a diagram showing the varying pressure in the cylinder of an engine or pump at every point of the stroke. It consists of a small cylinder communicating with the engine cylinder and fitted with a piston which the varying pressure drives upward more or less against the resistance of a spring. A lever imparts motion to a pencil which traces the diagram on a card wrapped around a vertical drum which is turned back and forth by a string connected with the pist

Sore :: Sore (superl.) Tender to the touch; susceptible of pain from pressure; inflamed; painful; -- said of the body or its parts; as, a sore hand..

Bulkhead :: Bulkhead (n.) A structure of wood or stone, to resist the pressure of earth or water; a partition wall or structure, as in a mine; the limiting wall along a water front..

Standpoint :: Standpipe (n.) A supply pipe of sufficient elevation to enable the water to flow into the boiler, notwithstanding the pressure of the steam..

Intropression :: Intropression (n.) Pressure acting within.

Anticyclone :: Anticyclone (n.) A movement of the atmosphere opposite in character, as regards direction of the wind and distribution of barometric pressure, to that of a cyclone..

Hysteroepilepsy :: Hysteroepilepsy (n.) A disease resembling hysteria in its nature, and characterized by the occurrence of epileptiform convulsions, which can often be controlled or excited by pressure on the ovaries, and upon other definite points in the body..

Scrape :: Scrape (v. t.) To rub over the surface of (something) with a sharp or rough instrument; to rub over with something that roughens by removing portions of the surface; to grate harshly over; to abrade; to make even, or bring to a required condition or form, by moving the sharp edge of an instrument breadthwise over the surface with pressure, cutting away excesses and superfluous parts; to make smooth or clean; as, to scrape a bone with a knife; to scrape a metal plate to an even surface..

Receiver :: Receiver (n.) A vessel for receiving the exhaust steam from the high-pressure cylinder before it enters the low-pressure cylinder, in a compound engine..

Hotpress :: Hotpress (v. t.) To apply to, in conjunction with mechanical pressure, for the purpose of giving a smooth and glosay surface, or to express oil, etc.; as, to hotpress paper, linen, etc..

Burst :: Burst (v. i.) To fly apart or in pieces; of break open; to yield to force or pressure, especially to a sudden and violent exertion of force, or to pressure from within; to explode; as, the boiler had burst; the buds will burst in spring..

Noncondensing :: Noncondensing (a.) Not condensing; discharging the steam from the cylinder at a pressure nearly equal to or above that of the atmosphere and not into a condenser.

Pulsometer :: Pulsometer (n.) A device, with valves, for raising water by steam, partly by atmospheric pressure, and partly by the direct action of the steam on the water, without the intervention of a piston; -- also called vacuum pump..

Barometrograph :: Barometrograph (n.) A form of barometer so constructed as to inscribe of itself upon paper a record of the variations of atmospheric pressure.

Collateral :: Collateral (a.) Coming from, being on, or directed toward, the side; as, collateral pressure..

Comedo :: Comedo (n.) A small nodule or cystic tumor, common on the nose, etc., which on pressure allows the escape of a yellow wormlike mass of retained oily secretion, with a black head (dirt)..

High-pressure :: High-pressure (a.) Having or involving a pressure greatly exceeding that of the atmosphere; -- said of steam, air, water, etc., and of steam, air, or hydraulic engines, water wheels, etc..

Manometer :: Manometer (n.) An instrument for measuring the tension or elastic force of gases, steam, etc., constructed usually on the principle of allowing the gas to exert its elastic force in raising a column of mercury in an open tube, or in compressing a portion of air or other gas in a closed tube with mercury or other liquid intervening, or in bending a metallic or other spring so as to set in motion an index; a pressure gauge. See Pressure, and Illust. of Air pump..

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