Definition of iron
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Iron (n.) The most common and most useful metallic element, being of almost universal occurrence, usually in the form of an oxide (as hematite, magnetite, etc.), or a hydrous oxide (as limonite, turgite, etc.). It is reduced on an enormous scale in three principal forms; viz., cast iron, steel, and wrought iron. Iron usually appears dark brown, from oxidation or impurity, but when pure, or on a fresh surface, is a gray or white metal. It is easily oxidized (rusted) by moisture, and is attacked b
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Nickel ::
Nickel (n.) A bright silver-white metallic element. It is of the iron group, and is hard, malleable, and ductile. It occurs combined with sulphur in millerite, with arsenic in the mineral niccolite, and with arsenic and sulphur in nickel glance. Symbol Ni. Atomic weight 58.6..
Clay ::
Clay (n.) A soft earth, which is plastic, or may be molded with the hands, consisting of hydrous silicate of aluminium. It is the result of the wearing down and decomposition, in part, of rocks containing aluminous minerals, as granite. Lime, magnesia, oxide of iron, and other ingredients, are often present as impurities..
Beam ::
Beam (n.) A heavy iron lever having an oscillating motion on a central axis, one end of which is connected with the piston rod from which it receives motion, and the other with the crank of the wheel shaft; -- called also working beam or walking beam..
Principal ::
Principal (n.) The construction which gives shape and strength to a roof, -- generally a truss of timber or iron, but there are roofs with stone principals. Also, loosely, the most important member of a piece of framing..
Chain ::
Chain (n.) Iron links bolted to the side of a vessel to bold the dead-eyes connected with the shrouds; also, the channels..
Scale ::
Scale (n.) Hence, any layer or leaf of metal or other material, resembling in size and thinness the scale of a fish; as, a scale of iron, of bone, etc..
Branding Iron ::
Branding iron () An iron to brand with.
Quoit ::
Quoit (n.) A flattened ring-shaped piece of iron, to be pitched at a fixed object in play; hence, any heavy flat missile used for the same purpose, as a stone, piece of iron, etc..
Turnbull''s Blue ::
Turnbull's blue () The double cyanide of ferrous and ferric iron, a dark blue amorphous substance having a coppery luster, used in dyeing, calico printing, etc. Cf. Prussian blue, under Prussian..
Spanner ::
Spanner (n.) An iron instrument having a jaw to fit a nut or the head of a bolt, and used as a lever to turn it with; a wrench; specifically, a wrench for unscrewing or tightening the couplings of hose..
Grapnel ::
Grapnel (n.) A small anchor, with four or five flukes or claws, used to hold boats or small vessels; hence, any instrument designed to grapple or hold; a grappling iron; a grab; -- written also grapline, and crapnel..
Melanotype ::
Melanotype (n.) A positive picture produced with sensitized collodion on a smooth surface of black varnish, coating a thin plate of iron; also, the process of making such a picture..
Dog ::
Dog (n.) A grappling iron, with a claw or claws, for fastening into wood or other heavy articles, for the purpose of raising or moving them..
Refinery ::
Refinery (n.) A furnace in which cast iron is refined by the action of a blast on the molten metal.
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