From The Collaborative International Dictionary of English v.0.48 [gcide]:
Sodium bicarbonate \Sodium bicarbonate\,
a white crystalline substance, {HNaCO3}, with a slight
alkaline taste resembling that of sodium carbonate. It is
found in many mineral springs and also produced
artificially,. It is used in cookery, in baking powders, and
as a source of carbonic acid gas (carbon dioxide) for soda
water. Called also {baking soda}, {cooking soda},
{bicarbonate of soda}, {bicarb}, {saleratus}, and
technically, {acid sodium carbonate}, {sodium acid
carbonate}, {primary sodium carbonate}, {sodium dicarbonate},
etc.
[1913 Webster]
From WordNet (r) 3.0 (2006) [wn]:
sodium bicarbonate
n 1: a white soluble compound (NaHCO3) used in effervescent
drinks and in baking powders and as an antacid [syn:
{bicarbonate of soda}, {sodium hydrogen carbonate}, {sodium
bicarbonate}, {baking soda}, {saleratus}]
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