baking soda, bicarbonate of soda, saleratus, sodium bicarbonate, sodium hydrogen carbonate - a white soluble compound (NaHCO3) used in effervescent drinks and in baking powders and as an antacid

carbonate - a salt or ester of carbonic acid (containing the anion CO3)

potassium acid carbonate, potassium bicarbonate, potassium hydrogen carbonate - a crystalline salt (KHCO3) that is used in baking powder 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