Search the Dictionary

observation of barometric pressure; esp., one for determining heights by ascertaining the boiling point of water. It consists of a vessel for water, with a lamp for heating it, and an inclosed thermometer for showing the temperature of ebullition.

a body, as a deposit of lime, sediment, etc., from water on the inner surface of a steam boiler.

A pressure gauge; a water gauge, as for a steam boiler; an apparatus or instrument for showing the working of a machine or moving part; as:

To steep in water or other fluid without boiling, for the propose of extracting medicinal qualities; to soak. One scruple of dried leaves is infused in ten ounces of warm water. Coxe.

A contrivance for forcing feed water into a steam boiler by the direct action of the steam upon the water. The water is driven into the boiler by the impulse of a jet of the steam which becomes condensed as soon as it strikes the stream of cold water it impels; - - also called Giffard's injector, from the inventor.…

inder, as by the explosion of a gas, and not in a separate chamber, as in a steam- engine boiler. The gas used may be a fixed gas, or one derived from alcohol, ether, gasoline (petrol), naphtha, oil (petroleum), etc. There are three main classes: (1) gas engines proper, using fixed gases, as coal, blast-furnace, or pro…

ducting material such as wood or felt, used to prevent radiation of heat, as from a steam boiler, cylinder, pipe, etc.

A preserve of fruit boiled with sugar and water; as, raspberry jam; currant jam; grape jam. Jam nut. See Check nut, under Check. -- Jam weld (Forging), a butt weld. See under Butt.

The juice of fruits or meats boiled with sugar to an elastic consistence; as, currant jelly; calf's-foot jelly. Jelly bag, a bag through which the material for jelly is strained. -- Jelly mold, a mold for forming jelly in ornamental shapes. -- Jelly plant (Bot.), Australian name of an edible seaweed (Eucheuma specios…

a tactless or malicious person who, under pretense of sympathy, insinuates rebukes. (b) A boil. [Colloq.] -- Job's news, bad news. Carlyle. -- Job's tears (Bot.), a kind of grass (Coix Lacryma), with hard, shining, pearly grains.

To seethe or stew, as in a jug or jar placed in boiling water; as, to jug a hare.

specifically, the place where two or more lines of railway meet or cross. Junction plate (Boilers), a covering or break-join plate riveted to and uniting the edges of sheets which make a butt joint. -- Junction rails (Railroads), the switch, or movable, rails, connecting one line of track with another.…

s keelson, a similar structure lying athwart the main keelson, to support the engines and boilers.

A metallic vessel, with a wide mouth, often without a cover, used for heating and boiling water or other liguids. Kettle pins, ninepins; skittles. [Obs.] Shelton. -- Kettle stitch (Bookbinding), the stitch made in sewing at the head and tail of a book. Knight.

.), one of the narrow boards or staves forming the covering of a cylindrical object, as a boiler, or the cylinder of a carding machine or a steam engine.

An extension of the boiler downward, in the form of a narrow space between vertical plates, sometimes nearly surrounding the furnace and ash pit, and serving to support the boiler; -- called also water leg.

ormed in the decomposition of albuminous matter by pancreatic digestion, by the action of boiling dilute sulphuric acid, and by putrefaction. It is also found as a constituent of various tissues and organs, as the spleen, pancreas, etc., and likewise in the vegetable kingdom. Chemically it is to be considered as amido-…

crude petroleum. It is a complex and variable mixture of several hydrocarbons, generally boils below 170º Fahr., and is more inflammable than safe kerosene. It is used as a solvent, as a carburetant for air gas, and for illumination in special lamps.

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.).

d a circular track when the bridge or table turns. -- Live steam , steam direct from the boiler, used for any purpose, in distinction from exhaust steam. -- Live stock, horses, cattle, and other domestic animals kept on a farm. whole body.