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See also: Borax and bórax


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From Middle English boras, from Anglo-Norman boreis, from Medieval Latin baurach (borax), from Arabic بَوْرَق(bawraq), from Middle Persian bwlk' (bōrag), which yielded Persian بوره(bure).


borax (uncountable)

  1. A white or gray/grey crystalline salt, with a slight alkaline taste, used as a flux, in soldering metals, making enamels, fixing colors/colours on porcelain, and as a soap, etc.
  2. (chemistry) The sodium salt of boric acid, Na2B4O7, either anhydrous or with 5 or 10 molecules of water of crystallisation; sodium tetraborate.
  3. (sometimes attributive) Cheap or tawdry furniture or other works of industrial design.
    • 1977, Harlan Ellison, Jeffty is Five
      Furniture isn't made to last thirty years or longer because they took a survey and found that young homemakers like to throw their furniture out and bring in all new, color-coded borax every seven years.


Derived terms[edit]


Further reading[edit]

  • Borax” in David Barthelmy, Webmineral Mineralogy Database[1], 1997–.
  • borax”, in[2], Hudson Institute of Mineralogy, 2000–2020.
  • borax at the Free Dictionary