- supercarbonate
- Bicarbonate Bi*car"bon*ate, n. [Pref. bi- + carbonate.] (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}. [1913 Webster]
The Collaborative International Dictionary of English. 2000.