borax(redirected from Na2b4o7)
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1. A hydrated sodium borate, Na2B4O7·10H2O, an ore of boron, that is used as a cleaning compound.
2. Cheap merchandise, especially tasteless furnishings: "today's glinty borax" (New Yorker).
[Middle English, from Medieval Latin bōrāx, from Arabic būraq, from Middle Persian būrak. Sense 2, perhaps from the custom of giving away borax soap as a premium for the sale of cheap furniture .]
n, pl -raxes or -races (-rəˌsiːz)
1. (Minerals) Also called: tincal a soluble readily fusible white mineral consisting of impure hydrated disodium tetraborate in monoclinic crystalline form, occurring in alkaline soils and salt deposits. Formula: Na2B4O7.10H2O
2. (Elements & Compounds) pure disodium tetraborate
[C14: from Old French boras, from Medieval Latin borax, from Arabic būraq, from Persian būrah]
bo•rax1(ˈbɔr æks, -əks, ˈboʊr-)
n., pl. bo•rax•es, bo•ra•ces (ˈbɔr əˌsiz, ˈboʊr-)
a water-soluble powder or crystals, hydrated sodium borate, Na2B4O7∙10H2O, used as a flux, as a cleansing agent, in glassmaking, and in tanning.
[1350–1400; Middle English boras < Middle French < Medieval Latin borax]
bo•rax2(ˈbɔr æks, -əks, ˈboʊr-)
cheap, showy, poorly made merchandise, esp. cheaply built furniture of an undistinguished or heterogeneous style.
[1940–45, Amer.; of uncertain orig.]
A white, crystalline powder and mineral used as an antiseptic, as a cleansing agent, and in fusing metals and making heat-resistant glass. The mineral is an ore of boron.
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|Noun||1.||borax - an ore of boron consisting of hydrated sodium borate; used as a flux or cleansing agent|
atomic number 5, boron, B - a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition