• synonyms


[bahy-kahr-buh-nit, -neyt]
noun Chemistry.
  1. a salt of carbonic acid, containing the HCO3−1 group; an acid carbonate, as sodium bicarbonate, NaHCO3.
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Origin of bicarbonate

First recorded in 1810–20; bi-1 + carbonate
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for bicarbonate

Historical Examples of bicarbonate

  • The water drips from the roof charged with bicarbonate of lime.

    Fragments of science, V. 1-2

    John Tyndall

  • He took a pull at the tumbler of bicarbonate and made an involuntary grimace.

  • It was all through her anxiety that old Christopher should have his bicarbonate of soda.

    It Never Can Happen Again

    William De Morgan

  • From bicarbonate of potassium, in crystals, heated to redness in a crucible.

  • When in use the acid is tilted over and comes in contact with the bicarbonate.

British Dictionary definitions for bicarbonate


  1. a salt of carbonic acid containing the ion HCO 3 ; an acid carbonate
  2. (modifier) consisting of, containing, or concerned with the ion HCO 3 a bicarbonate compound Systematic name: hydrogen carbonate
  3. short for bicarbonate of soda
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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

Word Origin and History for bicarbonate


1819, from bi- + carbonate.

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Online Etymology Dictionary, © 2010 Douglas Harper

bicarbonate in Medicine


(bī-kärbə-nāt′, -nĭt)
  1. The radical group HCO3 or a compound, such as sodium bicarbonate, containing it.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

bicarbonate in Science


  1. The group HCO3 or a compound containing it, such as sodium bicarbonate. When heated, bicarbonates give off carbon dioxide.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.