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

Baking soda, also known as sodium bicarbonate, is a common household ingredient used for cooking, cleaning, digestive and dental health, and more.1 Often included in toothpaste products, baking soda may help whiten teeth, reduce plaque, and support oral hygiene. —Cristina Mutchler, Health, 27 Mar. 2025

Baking soda, or sodium bicarbonate, is a common ingredient in pantries for baking cookies or a cake. —Lauren David, Southern Living, 26 Mar. 2025

When water evaporates from a still-hot, nearly empty kettle, remaining calcium and magnesium crystallize into calcium carbonate (not to be confused with sodium bicarbonate, a.k.a. —Emily Farris, Bon Appétit, 25 Mar. 2025

Contain ingredients or combination of ingredients such as aluminum hydroxide (such as Mylanta, Maalox), calcium carbonate (such as Tums or Rolaids), magnesium hydroxide (such as Milk of Magnesia, Mylanta), and sodium bicarbonate (such as Alka-Seltzer).11 Provide quick relief. —Karen Berger, Pharmd, Verywell Health, 24 Mar. 2025

Word History

First Known Use

1885, in the meaning defined above

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