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Capable of being traduced or calumniated. [R.]

A hydrous phosphate of alumina containing a little copper; calaite. It has a blue, or bluish green, color, and usually occurs in reniform masses with a botryoidal surface. [Formerly written also turcois, and turkois.]

y powdering lapis lazuli, but now produced in large quantities by fusing together silica, alumina, soda, and sulphur, thus forming a glass, colored blue by the sodium polysulphides made in the fusion. Also used adjectively. Green ultramarine, a green pigment obtained as a first product in the manufacture of ultramarine…

An apple-green mineral occurring in reniform masses. It is a hydrous phosphate of alumina.

o massive, of a brown to green color, rarely sulphur yellow and blue. It is a silicate of alumina and lime with some iron magnesia, and is common at Vesuvius. Also called idocrase.

To degrade or debase by report; to defame; to traduce; to calumniate. I. Taylor. Many passions dispose us to depress and vilify the merit of one rising in the esteem of mankind. Addison.

ese, or mixture of different oxides and water, with some oxide of iron, and often silica, alumina, lime, or baryta; black ocher. There are several varieties.

itation of chamois, or shammy, and used for dusting, cleaning glass or plate, etc.; also, alumed, or buff, leather for soldiers' belts.

A tall march perennial grass (Paspalum dilatatum) of the southern United States and the American tropics.

A hydrous phosphate of alumina, occurring usually in hemispherical radiated forms varying in color from white to yellow, green, or black.

A hydrous sulphate of alumina occurring in white reniform masses.

n.) Native lead carbonate; cerusite. -- White leather, buff leather; leather tanned with alum and salt. -- White leg (Med.), milk leg. See under Milk. -- White lettuce (Bot.), rattlesnake root. See under Rattlesnake. -- White lie. See under Lie. -- White light. (a) (Physics) Light having the different colors in th…

Leather dressed or tawed with alum, salt, etc., remarkable for its pliability and toughness; white leather.

To cause to languish, perish, or pass away; to blight; as, a reputation withered by calumny. The passions and the cares that wither life. Bryant.

- Wood pigeon. (Zoöl.) (a) Any one of numerous species of Old World pigeons belonging to Palumbus and allied genera of the family Columbidæ. (b) The ringdove. -- Wood puceron (Zoöl.), a plant louse. -- Wood pulp (Technol.), vegetable fiber obtained from the poplar and other white woods, and so softened by digestion w…

es, valued for making edge tools; Indian steel. It has in combination a minute portion of alumina and silica.

A rare metallic element of the boron-aluminium group, found in gadolinite and other rare minerals, and extracted as a dark gray powder. Symbol Y. Atomic weight, 89. [Written also ittrium.]

A term now used to designate any one of a family of minerals, hydrous silicates of alumina, with lime, soda, potash, or rarely baryta. Here are included natrolite, stilbite, analcime, chabazite, thomsonite, heulandite, and others. These species occur of secondary origin in the cavities of amygdaloid, basalt, and lava,…

el (Min.), a mineral, related to spinel, consisting essentially of the oxides of zinc and aluminium; gahnite. -- Zinc vitriol (Chem.), zinc sulphate. See White vitriol, under Vitriol. -- Zinc white, a white powder consisting of zinc oxide, used as a pigment.

curring in orthorhombic, prismatic crystals, also in columnar masses. It is a silicate of alumina and lime, and is allied to epidote.