• synonyms

boric acid

  1. Also called orthoboric acid. Chemistry, Pharmacology. a white, crystalline acid, H3BO3, occurring in nature or prepared from borax: used chiefly in the manufacture of ceramics, cements, glass, and enamels, for fireproofing, and in medicine in aqueous solution as a mild antiseptic.
  2. Chemistry. any of a group of acids containing boron.
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Origin of boric acid

First recorded in 1865–70
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for boric acid

Historical Examples of boric acid

  • If any discharge is present, the boric-acid solution should invariably be used twice a day.

    The Care and Feeding of Children

    L. Emmett Holt

  • Boric-acid wash (15 grains to the ounce) and oxide-of-zinc ointment, applied in the same manner as the above.

    Essentials of Diseases of the Skin

    Henry Weightman Stelwagon

  • Then the raw surface is dusted over with pure boric acid or aristol, and the boric-acid ointment applied as before.

British Dictionary definitions for boric acid

boric acid

  1. Also called: orthoboric acid a white soluble weakly acid crystalline solid used in the manufacture of heat-resistant glass and porcelain enamels, as a fireproofing material, and as a mild antiseptic. Formula: H 3 BO 3Systematic name: trioxoboric(III) acid
  2. any other acid containing boron
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

boric acid in Medicine

boric acid

  1. A water-soluble white or colorless crystalline compound used as an antiseptic and preservative.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

boric acid in Science

boric acid

  1. A white or colorless crystalline compound that occurs naturally or is produced artificially from borax. It is used as an antiseptic and preservative, and in cements, enamels, and cosmetics. Chemical formula: H3BO3.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.