[bahy-kahr-buh-nit, -neyt]

noun Chemistry.

a salt of carbonic acid, containing the HCO3−1 group; an acid carbonate, as sodium bicarbonate, NaHCO3.

Origin of bicarbonate

First recorded in 1810–20; bi-1 + carbonate Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for bicarbonate

Historical Examples of bicarbonate

British Dictionary definitions for bicarbonate



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

Online Etymology Dictionary, © 2010 Douglas Harper

bicarbonate in Medicine


[bī-kärbə-nāt′, -nĭt]


The radical group HCO3 or a compound, such as sodium bicarbonate, containing it.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

bicarbonate in Science



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