Search the Dictionary

Imperfectly crystallized or coarse diamonds, or fragments made in cutting good diamonds which are reduced to powder and used in lapidary work.

A mineral of a steel-gray to black color and metallic luster, occurring crystallized, often in twin crystals shaped like cogwheels (wheel ore), also massive. It is a sulphide of antimony, lead, and copper.

A substance, C16H14O5, extracted from brazilwood as a yellow crystalline powder which is white when pure. It is colored intensely red by alkalies on exposure to the air, being oxidized to bra*sil"e*in, C16H12O5, to which brazilwood owes its dyeing properties.

e contained in both Brazil wood and Sapan wood, from which it is extracted as a yellow crystalline substance which is white when pure. It is colored intensely red by alkalies. [Written also brezilin.]

To burn. [Obs.] Chaucer. Consuming fire brent his shearing house or stall. W. Browne.

The head gear with which a horse is governed and restrained, consisting of a headstall, a bit, and reins, with other appendages.

ltness of a liquid. -- Brine pan, a pit or pan of salt water, where salt is formed by cristallization. -- Brine pit, a salt spring or well, from which water is taken to be boiled or evaporated for making salt. -- Brine pump (Marine Engin.), a pump for changing the water in the boilers, so as to clear them of the bri…

A colorless or white crystalline compound, (CH2)6N4C2H5Br, used as a sedative in epilepsy.

A crystalline substance (chemically, tribromophenol, C6H2Br3OH), used as an antiseptic and disinfectant.

of titanic oxide, and hence identical with rutile and octahedrite in composition, but crystallizing in the orthorhombic system.

A white or gray crystalline mineral consisting of the acid phosphate of calcium.

a large cavity, containing an oily fluid, which, after death, concretes into a whitish crystalline substance called spermaceti. See Sperm whale.

Of, pertaining to, or derived from, cacodyl. Cacodylic acid, a white, crystalline, deliquescent substance, (CH3)2AsO.OH, obtained by the oxidation of cacodyl, and having the properties of an exceedingly stable acid; -- also called alkargen.

obtained from, coffee. Caffeic acid, an acid obtained from coffee tannin, as a yellow crystalline substance, C9H8O4.

A white, bitter, crystallizable substance, obtained from coffee. It is identical with the alkaloid theine from tea leaves, and with guaranine from guarana.

A yellow or smoky brown variety of rock crystal, or crystallized quartz, found esp, in the mountain of Cairngorm, in Scotland.

Calcium carbonate, or carbonate of lime. It is rhombohedral in its crystallization, and thus distinguished from aragonite. It includes common limestone, chalk, and marble. Called also calc-spar and calcareous spar.

A bitter principle extracted as a white crystalline substance from the calumba root. [Written also colombin, and columbin]

Of, pertaining to, or derived from, camphor. Camphoric acid, a white crystallizable substance, C10H16O4, obtained from the oxidation of camphor.

f confectionery made by boiling sugar or molasses to the desired consistency, and than crystallizing, molding, or working in the required shape. It is often flavored or colored, and sometimes contains fruit, nuts, etc.