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iginally obtained from a lake in Thibet, and was sent to Europe under the name of tincal. Borax is a pyroborate or tetraborate of sodium, Na2B4O7.10H2O. Borax bead. (Chem.) See Bead, n., 3.

Pertaining to, or produced from, borax; containing boron; boric; as, boracic acid.

Relating to, or obtained from, borax; containing borax.

A nonmetallic element occurring abundantly in borax. It is reduced with difficulty to the free state, when it can be obtained in several different forms; viz., as a substance of a deep olive color, in a semimetallic form, and in colorless quadratic crystals similar to the diamond in hardness and other properties. It oc…

be eaten cold. -- Cold cream, an ointment made of white wax, almond oil, rose water, and borax, and used as a salve for the hands and lips. -- Cream cheese, a kind of cheese made from curd from which the cream has not been taken off, or to which cream has been added. -- Cream gauge, an instrument to test milk, being…

An aqueous solution of carbolic acid, borax, sodium bicarbonate, and glycerin, used as a spray in diseases of the nose and throat.

Any substance or mixture used to promote the fusion of metals or minerals, as alkalies, borax, lime, fluorite.

A vitreous compound, used by potters in glazing, consisting of lime, silica, borax, lead, and soda.

A red consisting of silica, borax, and soda, fused with oxide of copper and iron, and used in enamels, mosaics, etc.

ated in chemical composition, though similar or indentical in certain other respects; as, borax and augite are homoemorphous, but heteromerous.

d hydric-sodic- ammonic-phosphate. It is a powerful flux, and is used as a substitute for borax as a blowpipe reagent in testing for the metallic oxides. Originally obtained by the alchemists from human urine, and called sal microcosmicum.

sides; of, pertaining to, or formed in, octahedrons; as, octahedral cleavage. Octahedral borax (Chem.), borax obtained from a saturated solution in octahedral crystals, which contain five molecules of water of crystallization; distinguished from common or prismatic borax. -- Octahedral iron ore (Min.), magnetite.…

Same as Orthorhombic. Prismatic borax (Chem.), borax crystallized in the form of oblique prisms, with ten molecules of water; -- distinguished from octahedral borax. -- Prismatic colors (Opt.), the seven colors into which light is resolved when passed through a prism; primary colors. See Primary colors, under Color.…

, an acid, H2B4O7 (called also tetraboric acid), which is the acid ingredient of ordinary borax, and is obtained by heating boric acid.

specifically, in assaying, to fuse so as to separate the gangue and earthy material, with borax, lead, soda, etc., thus leaving the gold and silver in a lead button; hence, to separate from, or by means of, a slag.

Crude native borax, formerly imported from Thibet. It was once the chief source of boric compounds. Cf. Borax.