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A compound formed from the hydrate of aluminium by the substitution of a metal for the hydrogen.

The metallic base of alumina. This metal is white, but with a bluish tinge, and is remarkable for its resistance to oxidation, and for its lightness, pertaining a specific gravity of about 2.6. Atomic weight 27.08. Symbol Al. Aluminium bronze or gold, a pale gold- colored alloy of aluminium and copper, used for journal…

An alloy of mercury with another metal or metals; as, an amalgam of tin, bismuth, etc.

To compound or mix, as quicksilver, with another metal; to unite, combine, or alloy with mercury.

The act or operation of compounding mercury with another metal; -- applied particularly to the process of separating gold and silver from their ores by mixing them with mercury. Ure.

One who, or that which, amalgamates. Specifically: A machine for separating precious metals from earthy particles by bringing them in contact with a body of mercury with which they form an amalgam.

d radical, NH4, having the chemical relations of a strongly basic element like the alkali metals.

A woman's headband (sometimes of metal), for binding the front hair.

A metal tie holding adjoining parts of a building together.

tion of which depends on the varying pressure of the atmosphere upon the elastic top of a metallic box (shaped like a watch) from which the air has been exhausted. An index shows the variation of pressure.

An oxide of a nonmetallic body or an organic radical, capable of forming an acid by uniting with the elements of water; -- so called because it may be formed from an acid by the abstraction of water.

To subject to great heat, and then cool slowly, as glass, cast iron, steel, or other metal, for the purpose of rendering it less brittle; to temper; to toughen.

The burning of metallic colors into glass, earthenware, etc.

A crooked tube of metal, to be introduced into the neck of a bottle for drawing out the liquid without disturbing the sediment or causing a gurgling noise.

An elementary substance, resembling a metal in its appearance and physical properties, but in its chemical relations belonging to the class of nonmetallic substances. Atomic weight, 120. Symbol, Sb.

An iron block, usually with a steel face, upon which metals are hammered and shaped.

isting of nitric and hydrochloric acids. It has the power of dissolving gold, the "royal" metal. -- Aqua Tofana, a fluid containing arsenic, and used for secret poisoning, made by an Italian woman named Tofana, in the middle of the 17th century, who is said to have poisoned more than 600 persons. Francis. -- Aqua vit…

A metal-hubbed wheel of great strength and elasticity, esp. adapted for artillery carriages and motor cars.

derived from, or containing, silver; -- said of certain compounds of silver in which this metal has its lowest proportion; as, argentic chloride.

White metal coated with silver. Simmonds.