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a fundamental conception, according to which, under similar conditions of temperature and pressure, all gases and vapors contain in the same volume the same number of ultimate molecules; -- so named after Avogadro, an Italian scientist. Sometimes called Ampère's law. -- Bode's law (Astron.), an approximative empirical…

orce and motion. Specif., a bar of metal, wood, or other rigid substance, used to exert a pressure, or sustain a weight, at one point of its length, by receiving a force or power at a second, and turning at a third on a fixed point called a fulcrum. It is usually named as the first of the six mechanical powers, and is…

essed. -- Linseed meal, linseed cake reduced to powder. -- Linseed oil, oil obtained by pressure from flaxseed.

The act, process, or method, of reducing a gas or vapor to a liquid by cold or pressure; as, the liquefaction of oxygen or hydrogen.

A substance whose parts change their relative position on the slightest pressure, and therefore retain no definite form; any substance in the state of liquidity; a fluid that is not aëriform.

of a mixture of liquefied oxygen and nitrogen. It is prepared by subjecting air to great pressure and then cooling it by its own expansion to a temperature below the boiling point of its constituents (N -194º C; O -183º C.).

plied load; a varying load; a moving load; as a moving train of cars on a bridge, or wind pressure on a roof. Live oak (Bot.), a species of oak (Quercus virens), growing in the Southern States, of great durability, and highly esteemed for ship timber. In California the Q. chrysolepis and some other species are also cal…

To increase the power of (a single-cylinder beam engine) by adding a small high-pressure cylinder with a piston acting on the beam between the center and the flywheel end, using high-pressure steam and working as a compound engine, -- a plan introduced by M'Naught, a Scottish engineer, in 1845.

, of which one species (Madia sativa) is cultivated for the oil yielded from its seeds by pressure. This oil is sometimes used instead of olive oil for the table.

Capable of being extended or shaped by beating with a hammer, or by the pressure of rollers; -- applied to metals. Malleable iron, iron that is capable of extension or of being shaped under the hammer; decarbonized cast iron. See under Iron. -- Malleable iron castings, articles cast from pig iron and made malleable by…

smoothing linen or cotton cloth, as sheets, tablecloths, napkins, and clothing, by roller pressure. Mangle rack (Mach.), a contrivance for converting continuous circular motion into reciprocating rectilinear motion, by means of a rack and pinion, as in the mangle. The pinion is held to the rack by a groove in such a ma…

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.

The refuse matter which remains after the pressure of fruit, particularly of grapes.

Sighing, suffocative panting, intercepted utterance, with a sense of pressure across the chest, occurring during sleep; the incubus; -- obsolete, except in the compound nightmare. I will ride thee o' nights like the mare. Shak.

A mass of mixed ingredients reduced to a soft pulpy state by beating or pressure; a mass of anything in a soft pulpy state. Specifically (Brewing), ground or bruised malt, or meal of rye, wheat, corn, or other grain (or a mixture of malt and meal) steeped and stirred in hot water for making the wort.…

y or highest in degree attainable or attained; as, a maximum consumption of fuel; maximum pressure; maximum heat.

ecrystallization which sedimentary rocks have undergone through the influence of heat and pressure, after which they are called metamorphic rocks.

rocess by which the material of rock masses has been more or less recrystallized by heat, pressure, etc., as in the change of sedimentary limestone to marble. Murchison.

An instrument for recording minor fluctuations of atmospheric pressure, as opposed to general barometric surges.

A machine used for expelling the juice, sap, etc., from vegetable tissues by pressure, or by pressure in combination with a grinding, or cutting process; as, a cider mill; a cane mill.