bicarbonate Meaning, Definition & Usage

  1. noun a salt of carbonic acid (containing the anion HCO3) in which one hydrogen atom has been replaced; an acid carbonate
    hydrogen carbonate.

WordNet

Bi*car"bon*ate noun
Etymology
Pref. bi-+ carbonate.
Definitions
  1. (Chem.) A carbonate in which but half the hydrogen of the acid is replaced by a positive element or radical, thus making the proportion of the acid to the positive or basic portion twice what it is in the normal carbonates; an acid carbonate; -- sometimes called supercarbonate.

Webster 1913