meaning of saleratus
1. Aerated salt; a white crystalline substance having an alkaline taste and reaction, consisting of sodium bicarbonate (see under Sodium. ) It is largely used in cooking, with sour milk (lactic acid) or cream of tartar as a substitute for yeast. It is also an ingredient of most baking powders, and is used in the preparation of effervescing drinks.
2. a white soluble compound NaHCO3 used in effervescent drinks and in baking powders and as an antacid