sodium bicarbonate

noun

: a white crystalline weakly alkaline salt NaHCO3 used especially in baking powders and fire extinguishers and in medicine as an antacid

called also baking soda, bicarbonate of soda

Examples of sodium bicarbonate in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Baking soda, or sodium bicarbonate, is a common ingredient in pantries for baking cookies or a cake. Lauren David, Southern Living, 9 Sep. 2025 Antacids generally contain aluminum hydroxide, calcium carbonate, sodium bicarbonate, or bismuth subsalicylate. Ann Pietrangelo, Verywell Health, 4 Sep. 2025 The capsules rely on the bubbling reaction of water and sodium bicarbonate to build pressure inside the capsule after it is swallowed. Scott Lafee, San Diego Union-Tribune, 5 Aug. 2025 Baking Soda and Cornstarch Many commercially available deodorants contain baking soda (sodium bicarbonate) and cornstarch. Sarah Hudgens, Health, 29 July 2025 See All Example Sentences for sodium bicarbonate

Word History

First Known Use

1885, in the meaning defined above

Time Traveler
The first known use of sodium bicarbonate was in 1885

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Cite this Entry

“Sodium bicarbonate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sodium%20bicarbonate. Accessed 10 Sep. 2025.

Kids Definition

sodium bicarbonate

noun
: a white weakly alkaline salt used especially in baking powders and fire extinguishers and in medicine as an antacid

called also baking soda, bicarbonate of soda

Medical Definition

sodium bicarbonate

noun
: a white crystalline weakly alkaline salt NaHCO3 used in baking powders and in medicine especially as an antacid

called also baking soda, bicarb, bicarbonate of soda, sodium acid carbonate

More from Merriam-Webster on sodium bicarbonate

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