| NOUN | substance | hydrogen carbonate, bicarbonate | a salt of carbonic acid (containing the anion HCO3) in which one hydrogen atom has been replaced |
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| Meaning | A salt of carbonic acid (containing the anion HCO3) in which one hydrogen atom has been replaced; an acid carbonate. | |
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| Synonym | bicarbonate | |
| Narrower | bicarbonate of soda, sodium hydrogen carbonate, sodium bicarbonate, baking soda, saleratus | A white soluble compound (NaHCO3) used in effervescent drinks and in baking powders and as an antacid |
| calcium bicarbonate | A bicarbonate that is a major cause of hard water | |
| magnesium bicarbonate | A bicarbonate that is a major cause of hard water | |
| potassium bicarbonate, potassium acid carbonate, potassium hydrogen carbonate | A crystalline salt (KHCO3) that is used in baking powder and as an antacid | |
| Broader | carbonate | A salt or ester of carbonic acid (containing the anion CO3) |
| Spanish | bicarbonato | |
| Catalan | bicarbonat | |
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