from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A water-soluble white or colorless crystalline compound, H3BO3, used as an antiseptic and preservative and in fireproofing compounds, cosmetics, cements, and enamels.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. H3BO3; B(OH)3; a white crystalline solid, soluble in hot water to form a weak acid. Used as a mild antiseptic, flame retardant, insecticide, and in the manufacture of borax and other borate salts.
  • n. A hydrate of boric oxide, specifically any of the three acids orthoboric acid, metaboric acid, or pyroboric acid.

from the GNU version of the Collaborative International Dictionary of English

  • adj. a white crystalline substance B(OH)3, easily obtained from its salts, and occurring in solution in the hot lagoons of Tuscany.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. any of various acids containing boron and oxygen
  • n. a white or colorless slightly acid solid that is soluble in water and ethanol; used in the manufacture of glass and paper and adhesives and in detergents and as a flux in welding; also used as an antiseptic and food preservative


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