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Pressure acting within. [R.]

The quality or state of being equal in weight, especially in atmospheric pressure. Also, the theory, method, or application of isobaric science.

Denoting equal pressure; as, an isobaric line; specifically, of or pertaining to isobars.

The quality or state of being equal in weight, especially in atmospheric pressure. Also, the theory, method, or application of isobaric science.

Indicating equal barometric pressure.

A line upon a thermodynamic diagram so drawn as to represent the pressures corresponding to changes of temperature when the volume of the gas operated on is constant. -- I`so*chor"ic (#), a.

a pair of lines or curves exhibiting, on a diagram of energy, the law of variation of the pressure and density of a fluid, the one during the lowering, and the other during the raising, of its temperature, when the quantity of heat given out by the fluid during any given stage of the one process is equal to the quantit…

ation. Isometric lines (Thermodynamics), lines representing in a diagram the relations of pressure and temperature in a gas, when the volume remains constant. -- Isometrical perspective. See under Perspective. -- Isometrical projection, a species of orthographic projection, in which but a single plane of projection i…

Having equal pressure. Isopiestic lines, lines showing, in a diagram, the relations of temperature and volume, when the elastic force is constant; -- called also isobars.

Subjected to equal pressure from every side; being in hydrostatic equilibrium, as a body submerged in a liquid at rest; pertaining to, or characterized by, isostasy.

A portable machine variously constructed, for exerting great pressure, or lifting or moving a heavy body through a small distance. It consists of a lever, screw, rack and pinion, hydraulic press, or any simple combination of mechanical powers, working in a compact pedestal or support and operated by a lever, crank, cap…

A jack in which a screw is used for lifting, or exerting pressure. See Illust. of 2d Jack, n., 5.

A mass of people or objects crowded together; also, the pressure from a crowd; a crush; as, a jam in a street; a jam of logs in a river.

. In it air is taken by a pump from a cold chamber and compressed adiabatically until its pressure is eqal to that of the air in a hot chamber, into which it is then delivered, thereby displacing an equal amount of hot air into the engine cylinder. Here it expands adiabatically to the temperature of the cold chamber in…

making use of an opponent's strength and weight to disable or injure him, and by applying pressure so that his opposing movement will throw him out of balance, dislocate or break a joint, etc. It opposes knowledge and skill to brute strength, and demands an extensive practical knowledge of human anatomy.…

To work and press into a mass, usually with the hands; esp., to work, as by repeated pressure with the knuckles, into a well mixed mass, as the materials of bread, cake, etc.; as, to knead dough. The kneading, the making of the cake, the heating of the oven, and the baking. Shak.

gainst decay by saturating with a solution of corrosive sublimate in open tanks, or under pressure.

An instrument for measuring, and recording graphically, the pressure of the blood in any of the blood vessels of a living animal; -- called also kymographion.

pable of being split into laminæ or thin plates, as mica; capable of being extended under pressure into a thin plate or strip. When a body can be readily extended in all directions under the hammer, it is said to be malleable; and when into fillets under the rolling press, it is said to be laminable. Ure.…

gans along either side of the body, often marked by a distinct line of color. -- Lateral pressure or stress (Mech.), a pressure or stress at right angles to the length, as of a beam or bridge; -- distinguished from longitudinal pressure or stress. -- Lateral strength (Mech.), strength which resists a tendency to frac…