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ned through deoxidation of an oxide of iron by exposure to a current of hydrogen or other reducing agent. When hydrogen is used the product is called also iron by hydrogen. -- To reduce an equation (Alg.), to bring the unknown quantity by itself on one side, and all the known quantities on the other side, without dest…

The act of reducing, or state of being reduced; conversion to a given state or condition; diminution; conquest; as, the reduction of a body to powder; the reduction of things to order; the reduction of the expenses of government; the reduction of a rebellious province.

Tending to reduce; having the power or effect of reducing. -- n.

ough manner; -- with out; as, to rough out a carving, a sketch. Roughing rolls, rolls for reducing, in a rough manner, a bloom of iron to bars. -- To rough it, to endure hard conditions of living; to live without ordinary comforts.

specifically, a thick layer of sand into which molten metal is run in casting, or from a reducing furnace. -- Sand birds (Zoöl.), a collective name for numerous species of limicoline birds, such as the sandpipers, plovers, tattlers, and many others; -- called also shore birds. -- Sand blast, a process of engraving a…

A machine formerly employed for reducing dislocations of the humerus.

A small quantity; a little bit; not much. [Obs.] Reducing them to narrow scantlings. Jer. Taylor.

The act, process, or result of scorifying, or reducing to a slag; hence, the separation from earthy matter by means of a slag; as, the scorification of ores.

The act of scraping; the act or process of making even, or reducing to the proper form, by means of a scraper.

nd mercury, usually produced as a gray metallic crystalline substance, which is used as a reducing agent, and otherwise. -- Sodium bicarbonate, a white crystalline substance, HNaCO3, with a slight alkaline taste resembling that of sodium carbonate. It is found in many mineral springs and also produced artificially,. I…

lution of cupric hydrate in sodium potassium tartrate, used as a means of determining the reducing power of certain sugars and sirups by the amount of red cuprous oxide thrown down. -- Heavy solution (Min.), a liquid of high density, as a solution of mercuric iodide in potassium iodide (called the Sonstadt or Thoulet…

The act of reducing to any state, as of mixing two bodies combletely. [Obs.] Bacon.

ining to, or designating, an organic acid (called also hydroxy malonic acid) obtained, by reducing mesoxalic acid, as a white crystalline substance.

ipulation applied to a hernial tumor, or to an intestinal obstruction, for the purpose of reducing it. Dunglison.

An implement for reducing a stiff soil, resembling a harrow, but running upon wheels. Hebert.

The act of triturating, or reducing to a fine or impalpable powder by grinding, rubbing, bruising, etc. Paley.

Designating, or pert. to, a gear for reducing or increasing a velocity ratio two to one.

the articles to vapor from molten zinc in a separate receptacle, using hydrogen or other reducing gas to prevent oxidation.

To add water to (anything), thereby extending the quantity or bulk while reducing the strength or quality; to extend; to dilute; to weaken. To water stock, to increase the capital stock of a company by issuing new stock, thus diminishing the value of the individual shares. Cf. Water, n., 7. [Brokers' Cant]…

To pass, or to draw off, (as steam) through narrow ports, or the like, thus reducing its pressure or force by friction.