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Molybdenum :: Molybdenum (n.) A rare element of the chromium group, occurring in nature in the minerals molybdenite and wulfenite, and when reduced obtained as a hard, silver-white, difficulty fusible metal. Symbol Mo. Atomic weight 95.9..

Chrome :: Chrome (n.) Same as Chromium.

Lherzolite :: Lherzolite (n.) An igneous rock consisting largely of chrysolite, with pyroxene and picotite (a variety of spinel containing chromium)..

Uranium :: Uranium (n.) An element of the chromium group, found in certain rare minerals, as pitchblende, uranite, etc., and reduced as a heavy, hard, nickel-white metal which is quite permanent. Its yellow oxide is used to impart to glass a delicate greenish-yellow tint which is accompanied by a strong fluorescence, and its black oxide is used as a pigment in porcelain painting. Symbol U. Atomic weight 239..

Perchromic :: Perchromic (a.) Pertaining to, or designating, a certain one of the highly oxidized compounds of chromium, which has a deep blue color, and is produced by the action of hydrogen peroxide..

Daubreelite :: Daubreelite (n.) A sulphide of chromium observed in some meteoric irons.

Trichromic :: Trichromic (a.) Containing three atoms of chromium.

Chromic :: Chromic (a.) Pertaining to, or obtained from, chromium; -- said of the compounds of chromium in which it has its higher valence..

Beryl :: Beryl (n.) A mineral of great hardness, and, when transparent, of much beauty. It occurs in hexagonal prisms, commonly of a green or bluish green color, but also yellow, pink, and white. It is a silicate of aluminium and glucinum (beryllium). The aquamarine is a transparent, sea-green variety used as a gem. The emerald is another variety highly prized in jewelry, and distinguished by its deep color, which is probably due to the presence of a little oxide of chromium..

Chromatype :: Chromatype (n.) A colored photographic picture taken upon paper made sensitive with potassium bichromate or some other salt of chromium.

Polychromic :: Polychromic (a.) Pertaining to, or designating, any one of several acids (known only in their salts) which contain more than one atom of chromium..

Chromous :: Chromous (a.) Of, pertaining to, or derived from, chromium, when this element has a valence lower than that in chromic compounds..

Chromite :: Chromite (n.) A black submetallic mineral consisting of oxide of chromium and iron; -- called also chromic iron.

Tungsten :: Tungsten (n.) A rare element of the chromium group found in certain minerals, as wolfram and scheelite, and isolated as a heavy steel-gray metal which is very hard and infusible. It has both acid and basic properties. When alloyed in small quantities with steel, it greatly increases its hardness. Symbol W (Wolframium). Atomic weight, 183.6. Specific gravity, 18..

Spinel :: Spinelle (n.) A mineral occuring in octahedrons of great hardness and various colors, as red, green, blue, brown, and black, the red variety being the gem spinel ruby. It consist essentially of alumina and magnesia, but commonly contains iron and sometimes also chromium..

Chromium :: Chromium (n.) A comparatively rare element occurring most abundantly in the mineral chromite. Atomic weight 52.5. Symbol Cr. When isolated it is a hard, brittle, grayish white metal, fusible with difficulty. Its chief commercial importance is for its compounds, as potassium chromate, lead chromate, etc., which are brilliantly colored and are used dyeing and calico printing. Called also chrome..

Metal :: Metal (n.) An elementary substance, as sodium, calcium, or copper, whose oxide or hydroxide has basic rather than acid properties, as contrasted with the nonmetals, or metalloids. No sharp line can be drawn between the metals and nonmetals, and certain elements partake of both acid and basic qualities, as chromium, manganese, bismuth, etc..

Mitter''s Green :: Mitter's green () A pigment of a green color, the chief constituent of which is oxide of chromium..

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