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boramez | borassus | borassus flabellifer | borate | borated | borax | borborygm | bord | bord service | bordage | bordar




boraxn. [OE. boras, fr. F. borax, earlier spelt borras; cf. LL. borax, Sp. borraj; all fr. Ar. brag, fr. Pers. brah.].
     A white or gray crystalline salt, with a slight alkaline taste, used as a flux, in soldering metals, making enamels, fixing colors on porcelain, and as a soap. It occurs native in certain mineral springs, and is made from the boric acid of hot springs in Tuscany. It was originally 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.  [1913 Webster]
Borax bead. (Chem.) See Bead, n., 3.


borax, n.
1 the mineral salt sodium borate, occurring in alkaline deposits as an efflorescence or as crystals.
2 the purified form of this salt, used in making glass and china, and as an antiseptic.

ME f. OF boras f. med.L borax f. Arab. burak f. Pers. burah

For further exploring for "borax" in Webster Dictionary Online

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