sodium bicarbonate sodium biborate • sodium bichromate · · · Info · Definitions · Synonyms · Characters · · sodium bicarbonate · · Text Common · · Latin · · Scripts 18 · · Length Definitions · · · (noun) a white soluble compound (NaHCO3) used in effervescent drinks and in baking powders and as an antacid. Synonyms: bicarbonate of soda, sodium hydrogen carbonate, baking soda, saleratus. · · Noun Definition 1 Synonyms · · · sodium · · Synonym 1 na · · Synonym 2 atomic number 11 · · Synonym 3 Characters · · space U+0020 a latin small letter a U+0061 b latin small letter b U+0062 c latin small letter c U+0063 d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075