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Definition of bicarbonate of soda noun from the Oxford Advanced Learner's Dictionary

bicarbonate of soda

noun
 
/baɪˌkɑːbənət əv ˈsəʊdə/
 
/baɪˌkɑːrbənət əv ˈsəʊdə/
(also baking soda, sodium bicarbonate, informal bicarb)
[uncountable]
(symbol NaHCO3)
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  1. a chemical in the form of a white powder that dissolves (= becomes a liquid or forms part of a liquid) and is used in baking to make cakes, etc. rise and become light, and in making fizzy drinks and some medicines
See bicarbonate of soda in the Oxford Advanced American Dictionary

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